2013年8月29日星期四

Identification of Tolylene-2,4-diisocyanate

Tolylene-2,4-diisocyanate (cas 584-84-9) Molecular Structure
Tolylene-2,4-diisocyanate


1.Chemical Properties

Name:Tolylene-2,4-diisocyanate

EINECS:209-544-5

Molecular Formula:C9H6N2O2

CAS Registry Number:584-84-9

Appearance:Water white to pale yellow liquid or crystals with a sweet, fruity, pungent odor. Darkens on exposure to sunlight.

Molecular Weight:174.16

Density:1.225

Boiling Point:115-120℃ (10 mmHg)

Melting Point:12.5-13.5℃

Flash Point:127℃

Storage Temperature:2-8°C

Refractive index:1.567-1.569

Solubility:reacts

Stability:Stable, but decomposes in the presence of moisture. Also heat and light sensitive. Readily polymerizes in contact with base. Reacts with compounds containing active hydrogen. Incompatible with strong oxidizing agents. Corrodes some copper and aluminium alloys.

Usage:Chemical intermediate.


2.Physical Properties

*Tolylene-2,4-diisocyanate is a colorless, yellow, or dark liquid with a sharp, pungent odor.
The odor threshod for Tolylene-2,4-diisocyanate is 0.17 parts per million (ppm).

*The chemical formula for Tolylene-2,4-diisocyanate is C9H6N2O2, and the
molecular weight is 174.15 g/mol.

*The vapor pressure for Tolylene-2,4-diisocyanate is 0.01 mm Hg at 80 °C, and it has a log octanol/water partition coefficient (log Kow) of 0 to 1 (estimated).

*Commercial toluene diisocyanate is comprised of approximately 80% Tolylene-2,4-diisocyanate and 20% toluene 2,6-diisocyanate.

Chemical Properties of 3,4-Dihydroxybenzaldehyde

3,4-Dihydroxybenzaldehyde (cas 139-85-5) Molecular Structure
3,4-Dihydroxybenzaldehyde


Name:3,4-Dihydroxybenzaldehyde

EINECS:205-377-7

Molecular Formula:C7H6O3

CAS Registry Number:139-85-5

Synonyms:Protocatechualdehyde; 3,4-Dihydroxybenzaldehyd (Protocatechualdehyde); protocatechuic aldehyde; AURORA 17180; AKOS BBS-00003254; 4-FORMYL-1,2-DIHYDROXYBENZENE; 1,2-Dihydroxy-4-formylbenzene; 3,4-dihydroxy-benzaldehyd; 3, 4-Dihydroxy benzlaldehyde

InChI:InChI=1/C7H6O3/c8-4-5-1-2-6(9)7(10)3-5/h1-4,9-10H

HS Code:29124900

Appearance:brown powder

Molecular Weight:138.12

Density:1.409g/cm3

Boiling Point:295.4°Cat760mmHg

Melting Point:152-157℃

Flash Point:146.7°C

Storage Temperature:2-8°C

Refractive index:1.674

Water solubility: 50 g/L (20 °C)

Stability:Stable. Incompatible with strong bases, strong oxidizing agents.

Risk Codes:R36/37/38

Safety Statements:S26;S37/39

MSDS infomation:3,4-Dihydroxybenzaldehyde (139-85-5).msds

Androst-4-en-3-one,17-(1-oxo-3-phenylpropoxy)-, (17b)-





Name:Androst-4-en-3-one,17-(1-oxo-3-phenylpropoxy)-, (17b)-

Iupac name:[(8R,9S,10R,13S,14S,17S)-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl] 3-phenylpropanoate

CAS Registry number:1255-49-8


Formula:C28H36O3

Molecular Weight:420.59

Synonyms:Testosterone,hydrocinnamate (6CI,7CI,8CI);Hydrocinnamic acid, ester with
testosterone(8CI);3-Oxoandrost-4-en-17b-yl b-phenylpropionate;Hydrocinnamic acid, testosterone ester;NSC 26643;Retandrol;Testosterone17-phenylpropionate;

EINECS:215-014-4

Density:1.13 g/cm3

Boiling Point:546.9 °C at 760 mmHg

Flash Point:233.3 °C

Appearance:White crystalline powder

Something about Naringin


  Naringin is a flavonoid compound found in grapefruit, naringin gives grapefruit its characteristic bitter flavor. Grapefruit processors attempt to select fruits with a low naringin content, and often blend juices obtained from different grapefruit varieties to obtain the desired degree of bitterness.

  The chemical formula of the compound is C27H32O14. It has a molecular weight of 580.53 and in its purest form, the compound appears as a yellow powder. Chemically, it is a conjugate of a sugar molecule and naringenin, which is another flavonoid present in grapefruit.



  
  EINECS:233-566-4

  Appearance:beige to yellowish powder

  CAS Registry Number:10236-47-2

  Melting Point:166℃

  Boiling Point:928.1°C at 760 mmHg

  Refractive index:-84°C(C=2,EtOH)

  Flash Point:928.1 °C  at 760 mmHg

  Molecular Formula:C27H32O14

  Stability:stable under normal temperatures and pressures.

  Usage:Antioxidant,antifungal

Identification of Tolylene-2,4-diisocyanate

Tolylene-2,4-diisocyanate


1.Chemical Properties

Name:Tolylene-2,4-diisocyanate (Related Reference)
EINECS:209-544-5
Molecular Formula:C9H6N2O2
CAS Registry Number:584-84-9
Appearance:Water white to pale yellow liquid or crystals with a sweet, fruity, pungent odor. Darkens on exposure to sunlight.
Molecular Weight:174.16
Density:1.225
Boiling Point:115-120℃ (10 mmHg)
Melting Point:12.5-13.5℃
Flash Point:127℃
Storage Temperature:2-8°C
Refractive index:1.567-1.569
Solubility:reacts
Stability:Stable, but decomposes in the presence of moisture. Also heat and light sensitive. Readily polymerizes in contact with base. Reacts with compounds containing active hydrogen. Incompatible with strong oxidizing agents. Corrodes some copper and aluminium alloys.
Usage:Chemical intermediate.

2.Physical Properties

*Tolylene-2,4-diisocyanateyanate is a colorless, yellow, or dark liquid with a sharp, pungent odor.
The odor threshod for Tolylene-2,4-diisocyanateyanate is 0.17 parts per million (ppm).

*The chemical formula for Tolylene-2,4-diisocyanateyanate is C9H6N2O2, and the molecular weight is 174.15 g/mol.

*The vapor pressure for Tolylene-2,4-diisocyanateyanate is 0.01 mm Hg at 80 °C, and it has a log octanol/water partition coefficient (log Kow) of 0 to 1 (estimated).

*Commercial toluene diisocyanate is comprised of approximately 80% Tolylene-2,4-diisocyanateyanate and 20% toluene 2,6-diisocyanate.

What dangerous dose Tolylene-2,4-diisocyanate have?


  Tolylene-2,4-diisocyanate is primarily used as a chemical intermediate in the production of polyurenthane products. Tolylene-2,4-diisocyanate is extremely toxic from acute (short-term) and chronic (long-term) exposures. Acute exposure to high levels of Tolylene-2,4-diisocyanate in humans, via inhalation, results in severe irritation of the skin and eyes and affects the respiratory, gastrointestinal, and central nervous systems (CNS). Chronic inhalation exposure to Tolylene-2,4-diisocyanate in humans has resulted in significant decreases in lung function in workers, an asthma-like reaction characterized by wheezing, dyspnea, and bronchial constriction. Animal studies have reported significantly increased incidences of tumors of the pancreas, liver, and mammary glands from exposure to Tolylene-2,4-diisocyanate via gavage (experimentally placing the chemical in the stomach). The International Agency for Research on Cancer (IARC) has classified Tolylene-2,4-diisocyanate as a Group 2B, possible human carcinogen.

Tolylene-2,4-diisocyanate,584-84-9



  1.Acute Effects

  *Acute exposure to high levels of Tolylene-2,4-diisocyanate in humans, via inhalation, results in severe irritation of the skin, eyes, and nose, and causes nausea and vomiting.

  *Acute animal tests in rats have shown Tolylene-2,4-diisocyanate to have moderate to extreme acute toxicity from inhalation exposure and low acute toxicity from oral exposure.

  2.Chronic Effects (Noncancer)

  *Chronic inhalation exposure to Tolylene-2,4-diisocyanate in workers has caused significant decreases in lung function, an asthma-like reaction characterized by wheezing, dyspnea, and bronchial constriction.

  *Animal studies have reported irritation of respiratory tissues, bronchopneumonia, and weight loss from chronic exposure to Tolylene-2,4-diisocyanate.

  *EPA has not established a Reference Concentration (RfC) or a Reference Dose (RfD) for Tolylene-2,4-diisocyanate. However, EPA has established an RfC of 0.00007 milligrams per cubic meter (mg/m3) for the mixture of toluene 2,4- and 2,6-diisocyanate based on respiratory effects in humans. The RfC is an estimate (with uncertainty spanning perhaps an order of magnitude) of a continuous inhalation exposure to the human population (including sensitive subgroups), that is likely to be without appreciable risk of deleterious noncancer effects during a lifetime. It is not a direct estimator of risk but rather a reference point to gauge the potential effects. At exposures increasingly greater than the RfC, the potential for adverse health effects increases. Lifetime exposure above the RfC does not imply that an adverse health effect would necessarily occur.

  *EPA has medium confidence in the study on which the RfC was based. Although the study was prospective and used appropriate endpoints and state-of-the-art methods in monitoring, the lack of exposure characterization in the first 2 years and the unknown relationship of peak exposures to lung function decline detract from clear identification of the no-observed-adverse-effect level (NOAEL) and lowest-observed-adverse-effect level (LOAEL); medium confidence in the database because of limitations in monitoring and analytical procedures in the majority of occupational studies cited and the uncertainties associated with peak vs. time-weighted-average (TWA) exposures as determinants of toxicity and, in addition, developmental toxicity data from a second species are lacking; and consequently medium confidence in the RfC.

  3.Reproductive/Developmental Effects

  *No information is available on the reproductive or developmental effects of Tolylene-2,4-diisocyanate in humans.

  *No reproductive or developmental effects were observed in rats exposed to a mixture of toluene 2,4- and 2,6-diisocyanate via inhalation.
 

2013年8月28日星期三

Information about 3-Amino-2-chloropyridine




Name:3-Amino-2-chloropyridine (Related Reference)

EINECS:228-572-9

Molecular Formula:C5H5ClN2

CAS Registry Number:6298-19-7

Synonyms:2-chloro-3-pyridylamine; 3-Amino-2-Chlorpyridine; 2-Chloro-3-
pyridinamine; 2-Chloro-3-aminopyridine; 3-2-chlorine pyridine acetaminophen; 2-
chloro-3-pyridine amine

InChI:InChI=1S/C5H5ClN2/c6-5-4(7)2-1-3-8-5/h1-3H,7H2

HS Code:29333999

Appearance:white to yellowish crystal

Molecular Weight:128.5596

Density:130

Boiling Point:130-134℃ (17 torr)

Melting Point:77-82℃

Flash Point:185℃

Storage Temperature:2-8°C

Refractive index:1.607

Solubility:SOLVENT

Stability:Stable under normal temperatures and pressures.

What benefits will you get from Naringin?


  Naringin is a flavanone glycoside. It is a major flavonoid in grapefruit and gives the grapefruit juice its bitter taste. It is metabolized to the flavanone naringenin in humans. Both naringenin and hesperetin, which are the aglycones of naringin andhesperidin, occur naturally in citrus fruits. In commercial grapefruit juice production, the enzyme naringinase is used to remove the bitterness created by naringin.
Naringin



  Studies have shown that naringin has a cholesterol-lowering effect, reduces LDL oxiation and can help to prevent hypercholesterolemia. Gorinstein S et al of the The Hebrew University-Hadassah Medical School, Jerusalem, studied the changes in plasma lipid and antioxidant activity in rats as a result of naringin and red grapefruit supplementation. They found that diets supplemented with red grapefruit juice and to a lesser degree with naringin improved the plasma lipid levels mainly in rats fed cholesterol and increased the plasma antioxidant activity. They concluded that naringin has plasma lipid lowering and plasma antioxidant activity increasing activity.

  Naringin is an aldose reductase inhibitor which means that it can help to fight retinal disease linked to diabetics.

  Naringin (and grapefruit) can interfere with certain drugs including calcium channel blockers, sedatives, cholesterol lowering drugs, caffeine and estrogen. Naringin stimulates the effect of caffeine and could therefore increase its fat burning action.

What effect will naringin have?


  Naringin belongs to the group of flavonoids. Pure naringin is a yellowish powder. Naringin is a conjugate of a sugar molecule with naringenin. The structure of naringin is very similar to that of hesperidin.Naringin is mainly found in grapefruits. It is the compound that gives grapefruit its typical bitter flavour.
naringin,10236-47-2

  Naringin may be instrumental in inhibiting cancer-causing compounds and thus may have potential chemotherapeutic value. Studies have also shown that naringin interferes with enzymatic activity in the intestines and, thus, with the breakdown of certain drugs, resulting in higher blood levels of the drug. A number of drugs that are known to be affected by the naringin in grapefruit include calcium channel blockers, estrogen, sedatives, medications for high blood pressure, allergies, AIDS, and cholesterol-lowering drugs. Caffeine levels and effects of caffeine may also be extended by consuming grapefruit or grapefruit juice. While the effect of naringin on the metabolism of a drug can increase the drug's effectiveness, it can also result in dosages that are inadvertently too high. Therefore, it's best not to take any drugs with grapefruit juice unless the interaction with the drug is known. In addition, the effects of drinking grapefruit juice is cumulative, which means that if you drank a glass of grapefruit juice daily with your medication for a week, the drug interaction would be stronger at the end of the week than at the beginning.

  Research on Naringin shows the following effects:

1. Protects against toxins in chemotherapy drugs and the environment

2. Enhances lipid metabolism

3. Enhances ethanol metabolism

4. Reduces negative effects of ethanol intake

5. Acts as a free radical scavenger

6. Reduces cytotoxicity

7. Acts as an antioxidant

8. Acts as an anti-apoptotic

9. Protect from carcinogenic matter

10. May reduce risk of atherosclerosis

11. Significantly inhibits LDL oxidation

12. Used in the treatment of gastric lesions

13. Inhibits the Sindbis neurovirulent virus

14. Reduces total cholesterol levels

15. Protects plasma vitamin E levels

16. Prevents hypercholesterolemia

17. Is anti-atherogenic

What's Naringin?


  Naringin is the chemical compound in grapefruit that is responsible for its bitter taste. It is classified as a phytochemical, which is a naturally occurring plant compound with potential nutritional benefits. Specifically, naringin is a water soluble flavonoid. It has been studied for its potential antioxidant and anti-carcinogenic properties, as well as its effects on enzyme activity in the digestive tract. Supplements containing naringin are typically used to enhance the effects of other drugs.
Naringin,10236-47-2

  1.How does it work?

  Naringin is a flavonoid found in grapefruits, and gives grapefruit its characteristic bitter flavor. Grapefruit processors attempt to select fruits with a low naringin content, and often blend juices obtained from different grapefruit varieties to obtain the desired degree of bitterness. Naringin is believed to enhance our perception of taste by stimulating the taste buds (some people consume a small amount of grapefruit juice before a meal for this reason).    On its own, Naringin has very little benefit. However, studies shown that naringin interferes with enzymatic activity in the intestines and, thus, with the breakdown of certain nutrients resulting in higher blood levels [1, 2]. Approximately 25 milligrams of Naringin is needed to enhance both the bioavailability and half-life of nutrients consumed with it.

  2.What can it be combined with?

  Naringin enhances both the oral uptake and half-life in the body of nutrients such as Forskolin or Guggulsterones. Approximately 20-25 milligrams of Naringin is needed to produce this effect.

  3.What effect dose it have?

    A variety of other pharmacological effects have been observed in vitro or in animal studies, but their relevance to human health in unknown. These effects include:

  *Naringin is an inhibitor of vascular endothelial growth factor (VEGF) release, which causes angiogenesis.

  *Naringin reduced diabetes-induced neuropathy in rats.

  *Naringin has shown protective effects on cognition and oxidative damage in rats.

2013年8月27日星期二

Information about Cytarabine




EINECS:205-705-9

Molecular Formula:C9H13N3O5

CAS Registry Number:147-94-4

Appearance:fine off-white crystalline powder

Molecular Weight:243.21662

Density:1.89 g/cm3

Boiling Point:545.7°C at 760 mmHg

Melting Point:212 - 213 C

Flash Point:283.8°C

Storage Temperature:2-8°C

Refractive index:1.756

Solubility:Soluble

Stability:Stable.

Usage:

  1.Cytarabine is mainly used in the treatment of acute myeloid leukaemia, acute lymphocytic leukaemia (ALL) and in lymphomas,where it is the backbone of induction chemotherapy.

  2.Cytarabine also possesses antiviral activity, and it has been used for the treatment of generalised herpesvirus infection. However, cytarabine is not very selective in this setting and causes bone marrow suppression and other severe side effects, so it is used mainly for the chemotherapy of hematologic cancers.

  3.Cytarabine is also used in the study of the nervous system to control the proliferation of glial cells in cultures, the amount of glial cells having an important impact on neurons.

Benzoic acid,4-hydroxy-, ethyl ester

Benzoic acid,4-hydroxy-, ethyl ester 


EINECS:204-399-4

Molecular Formula:C9H10O3

CAS Registry Number:120-47-8

Molecular Weight:166.17

Appearance:white crystalline powder

Density:1.168 g/cm3

Melting Point:115-118℃

Boiling Point:297-298℃

Vapour:0.000759mmHg at 25°C

Refractive Index:1.538

Flash Point:120.3 °C

Water:Soluble in ethanol, ether and acetone, slightly soluble in water

Solubilities:Soluble in ethanol, ether and acetone, slightly soluble in water

Color/Form:SMALL, COLORLESS CRYSTALS OR WHITE POWDERCrystals from dilute alcohol

Stability:Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.

HS Code:29182930

Storage temp:0-6°C

Methods of Manufacturing:Prepared by esterification of p-hydroxybenzoic acid.Parabens are prepared by esterifying PHBA /parahydroxybenzoic acid/ with the corresponding alcohol in the presence of an acid catalyst, such as sulfuric acid, and an excess of the specific alcohol. The acid is then neutralized with caustic soda, and the product is crystallized by cooling, centrifuged, washed, dried under vacuum, milled, and blended.

Tamoxifen citrate in body


  Tamoxifen citrate is a nonsteroidal agent that has demonstrated potent antiestrogenic properties in animal test systems. The antiestrogenic effects may be related to its ability to compete with estrogen for binding sites in target tissues such as breast. Tamoxifen inhibits the induction of rat mammary carcinoma induced by dimethylbenzanthracene (DMBA) and causes the regression of already established DMBA-induced tumors. In this rat model, tamoxifen appears to exert its antitumor effects by binding the estrogen receptors.
Tamoxifen citrate,54965-24-1

  In cytosols derived from human breast adenocarcinomas, tamoxifen competes with estradiol for estrogen receptor protein.

  Absorption and Distribution: Following a single oral dose of 20 mg tamoxifen, an average peak plasma concentration of 40 ng/mL (range 35 to 45 ng/mL) occurred approximately 5 hours after dosing. The decline in plasma concentrations of tamoxifen is biphasic with a terminal elimination half-life of about 5 to 7 days. The average peak plasma concentration of N-desmethyl tamoxifen is 15 ng/mL (range 10 to 20 ng/mL). Chronic administration of 10 mg tamoxifen given twice daily for 3 months to patients results in average steady-state plasma concentrations of 120 ng/mL (range 67-183 ng/mL) for tamoxifen and 336 ng/mL (range 148-654 ng/mL) for N-desmethyl tamoxifen. The average steady-state plasma concentrations of tamoxifen and N-desmethyl tamoxifen after administration of 20 mg tamoxifen once daily for 3 months are 122 ng/mL (range 71-183 ng/mL) and 353 ng/mL (range 152-706 ng/mL), respectively. After initiation of therapy, steady-state concentrations for tamoxifen are achieved in about 4 weeks and steady-state concentrations for N-desmethyl tamoxifen are achieved in about 8 weeks, suggesting a half-life of approximately 14 days for this metabolite. In a steady-state, crossover study of 10 mg tamoxifen citrate tablets given twice a day vs. a 20 mg tamoxifen citrate tablet given once daily, the 20 mg tamoxifen citrate tablet was bioequivalent to the 10 mg tamoxifen citrate tablets.

  Metabolism: Tamoxifen is extensively metabolized after oral administration. N-desmethyl tamoxifen is the major metabolite found in patients' plasma. The biological activity of N-desmethyl tamoxifen appears to be similar to that of tamoxifen. 4-Hydroxytamoxifen and a side chain primary alcohol derivative of tamoxifen have been identified as minor metabolites in plasma. Tamoxifen is a substrate of cytochrome P-450 3A, 2C9 and 2D6, and an inhibitor of P-glycoprotein.

  Excretion: Studies in women receiving 20 mg of 14C tamoxifen have shown that approximately 65% of the administered dose was excreted from the body over a period of 2 weeks with fecal excretion as the primary route of elimination. The drug is excreted mainly as polar conjugates, with unchanged drug and unconjugated metabolites accounting for less than 30% of the total fecal radioactivity.

Chemical and Physical Properties of Tamoxifen Citrate


  Tamoxifen Citrate is a white or pale yellow crystalline powder which is sparingly soluble in ethanol (95%), slightly soluble in water, practically insoluble in ether. A calibrated dropper is provided with each bottle to assure accurate measurement.


  Each bottle contains 30ml solution at 20 milligrams (mg) per milliliter (ml) - in etOH/ Glycerin (Ethyl Alcohol and Glycerin). The total amount of Tamoxifen Citrate per 30ml bottle is 600mg which is in solution and does not need to be shaken or stirred prior to administration.

  Storage Information: Room temperature.

  The solution may be stored at room temperature and remains stable at the above listed concentration effective until the expiration date listed on the bottle. The product will still remain active after the date of expiration but the concentrations and/or activity of the Tamoxifen Citrate cannot be guaranteed to remain intact after the listed expiration date.


  【Appearance】white to off-white powder

  【Melting Point】140-144℃

  【Boiling Point】665.9 °C at 760 mmHg

  【Flash Point】356.5 °C

    【CAS Registry Number】54965-24-1

  【Water】slightly soluble

  【Solubilities】slightly soluble

  【Color/Form】Crystals from petroleum ether.

  【Stability】Stable under normal temperatures and pressures.

  【Storage temp】2-8°C

  【Formula】C26H29NO.C6H8O7

  【Solubility】Soluble to 5 mM in ethanol with gentle warming and to 100 mM in DMSO with gentle warming

  【Biological Activity】Estrogen receptor antagonist/partial agonist. Selective and potent inhibitor of mammalian sterol isomerase. Neuroprotective in female rats in vivo. Also high affinity agonist at the membrane estrogen receptor GPR30.

2013年8月12日星期一

The Chemical properties Daidzein

daidzein

Name:daidzein
EINECS:207-635-4
Molecular Formula:C15H10O4
CAS Registry Number:486-66-8
Synonyms:4',7-Dihydroxyisoflavone; Soybean Extract
InChI:InChI=1/C15H10O4/c16-10-3-1-9(2-4-10)13-8-19-14-7-11(17)5-6-12(14)15(13)18/h1-8,16-17H
Appearance:white to off-white crystalline powder
Molecular Weight:254.24
Density:1.443 g/cm3
Boiling Point:512.8 °C at 760 mmHg
Melting Point:315-323oC (dec.)
Flash Point:201.2 °C
Storage Temperature:2-8°C
Refractive index:1.698
Solubility:insoluble
Biological Activity:Analog of the phytoestrogen genistein (5,7-Dihydroxy-3-(4-hydroxyphenyl)-4H-1-benzopyran-4-one ).Blocks G 1 phase cell cycle progression and is an agonist at estrogen receptors.
Stability:Stable under normal shipping and handling conditions.
Usage:Inactive analog of Genistein (Cat. #G350000). Blocks the G1 phase of the cell cycle in Swiss 3T3 cells by inhibiting casein kinase II activity1. Daidzein has also been shown to inhibit the action of GABA on recombinant GABAA receptors2. uv max:25

The chemical properties of Triethylamine

Triethylamine
Name:Triethylamine
EINECS:204-469-4
Molecular Formula:C6H15N
CAS Registry Number:121-44-8
Synonyms:TETN; Triethylamine, Free Base (1.08217); TRI ETHYLAMINE HCL; Triethyl Amine
InChI:InChI=1/C6H15N/c1-4-7(5-2)6-3/h4-6H2,1-3H3
HS Code:29211910
Appearance:colorless liquid
Molecular Weight:101.19
Density:0.728
Boiling Point:90℃
Melting Point:-115℃
Flash Point:-11℃
Storage Temperature:2-8°C
Refractive index:1.399-1.401
Solubility:5.5 g./100 g
Stability:Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, strong acids, ketones, aldehydes, halogenated hydrocarbons.
Usage:Chemical intermediate, anti-livering agent for urea & melamine based enamels, recovery of gelled paintermediate vehicles, catalyst for polyurethane foams, flux for copper soldering.

What’s Triethylamine?


  Triethylamine is the chemical compound with the formula N(CH2CH3)3, commonly abbreviated Et3N. It is also abbreviated TEA, yet this abbreviation must be used carefully to avoid confusion with triethanolamine or tetraethylammonium, for which TEA is also a common abbreviation. It is a colourless volatile liquid with a strong fishy odor reminiscent of ammonia and is also the smell of the hawthorn plant. Like diisopropylethylamine (Hünig’s base), triethylamine is commonly encountered in organic synthesis.
Triethylamine,121-44-8
    1.Physical Properties
    *The chemical formula for triethylamine is C6H15N, and its molecular weight is 101.19 g/mol.
    *Triethylamine occurs as a colorless flammable liquid that is slightly soluble in water.
    *Triethylamine has a strong fishy ammonia-like odor, with an odor threshold of 0.48 parts per million (ppm).
    *The vapor pressure for triethylamine is 400 mm Hg at 31.5 °C, and its log octanol/water partition coefficient (log Kow) is 1.45.  
  2.Uses
  *Triethylamine is used as a catalytic solvent in chemical syntheses; as an accelerator activator for rubber; as a corrosion inhibitor; as a curing and hardening agent for polymers; as a propellant; in the manufacture of wetting, penetrating, and waterproofing agents of quaternary ammonium compounds; and for the desalination of seawater.
  3.Sources and Potential Exposure
  *Occupational exposure may occur primarily via inhalation and dermal contact during its manufacture and use.
  *The general population may be exposed to triethylamine from ingesting contaminated food; triethylamine has been identified in broiled beef.

Information about Capsaicin

404-86-4

Name:capsaicin
EINECS:206-969-8
Molecular Formula:C18H27NO3
CAS Registry Number:404-86-4
Synonyms:Capsaicine; 8-Methyl-N-vanillyl-6-nonenamide
InChI:InChI=1/C18H27NO3/c1-14(2)8-6-4-5-7-9-18(21)19-13-15-10-11-16(20)17(12-15)22-3/h6,8,10-12,14,20H,4-5,7,9,13H2,1-3H3,(H,19,21)/b8-6+
Appearance:white crystalline powder
Molecular Weight:305.42
Density:1.041g/cm3
Boiling Point:511.5oCat760mmHg
Melting Point:62-65℃
Flash Point:263.1oC
Storage Temperature:2-8°C
Solubility:practically insoluble in cold water
Biological Activity:Prototypic vanilloid receptor agonist (pEC 50 values are 7.97 and 7.10 at rat and human VR1 receptors respectively). Excites a subset of primary afferent sensory neurons, with subsequent antinociceptive and anti-inflammatory effects. Reversibly inhibits aggregation of platelets. Also available as part of the Vanilloid TRPV1 Receptor Tocriset? .
Stability:Stable. Incompatible with strong oxidizing agents.
Usage:A representative lot is a 5:1 E:Z mixture. It is used as a tool in neurobiological research. Prototype vanilloid receptor agonist. Topical analgesic.

The Chemical properties Daidzein



Name:daidzein
EINECS:207-635-4
Molecular Formula:C15H10O4
CAS Registry Number:486-66-8
Synonyms:4',7-Dihydroxyisoflavone; Soybean Extract
InChI:InChI=1/C15H10O4/c16-10-3-1-9(2-4-10)13-8-19-14-7-11(17)5-6-12(14)15(13)18/h1-8,16-17H
Appearance:white to off-white crystalline powder
Molecular Weight:254.24
Density:1.443 g/cm3
Boiling Point:512.8 °C at 760 mmHg
Melting Point:315-323oC (dec.)
Flash Point:201.2 °C
Storage Temperature:2-8°C
Refractive index:1.698
Solubility:insoluble
Biological Activity:Analog of the phytoestrogen genistein (5,7-Dihydroxy-3-(4-hydroxyphenyl)-4H-1-benzopyran-4-one ).Blocks G 1 phase cell cycle progression and is an agonist at estrogen receptors.
Stability:Stable under normal shipping and handling conditions.
Usage:Inactive analog of Genistein (Cat. #G350000). Blocks the G1 phase of the cell cycle in Swiss 3T3 cells by inhibiting casein kinase II activity1. Daidzein has also been shown to inhibit the action of GABA on recombinant GABAA receptors2. uv max:25

L-arginine and L(+)-Citrulline


  L-arginine is an amino acid commonly sold in supplement form and obtained naturally in the diet. L-arginine-rich foods include plant and animal proteins, such as dairy products, meat, poultry, fish, and nuts.
 L(+)-Citrulline,372-75-8
L-citrulline(CAS.NO:372-75-8) is a nonessential amino acid that improves the flow of blood throughout the body. It also boosts the reserve of nutrients the body requires to manufacture particular proteins. Naturally-occurring in the urea cycle, L-citrulline can be taken as a nutritional supplement to aid such conditions as mental fatigue, physical fatigue, Alzheimer's disease, heart disease, and sexual dysfunction. It can also enhance the benefits of exercising and bodybuilding.  
  After it is produced in the human body, L-citrulline rids the body of the toxic ammonia contained in urea. L-citrulline is then converted to L-arginine, one of the most frequently occurring amino acids. From there it transforms into nitric oxide, a gas manufactured in the body that aids in vascular health and detoxification of the liver.
  L-arginine and L-citrulline are amino acids that have a wide range of effects on your body. Both of these protein building blocks can be found naturally in foods and synthesized in your body from other sources. In fact, citrulline can be produced in your body from arginine. Arginine and citrulline can be taken as nutritional supplements for their potential health benefits and low toxicity.
    L-Arginine Dosing:Arginine is naturally found in nuts, seeds, cereals, corn, meat, and a variety of other food products. According to the Mayo Clinic, there is little evidence for a standardized dose or arginine because many different doses have been studied. A common dose of arginine supplements range between 2 to 3 g three times a day for a total of 6 to 12 g daily. In certain clinical settings, up to 20 g of arginine per day have been used to successfully treat symptoms of congestive heart failure.
    L-Citrulline Dosing:Citrulline is found most abundantly in nature in watermelons, but is also derived from the metabolism of arginine in your body. Little peer-reviewed scientific information regarding effective dosages of citrulline are available. However, a 2008 study published by the "British Journal of Nutrition" found that short-term supplementation of citrulline in 2 to 15 g doses is safe and well-tolerated. Another study published in 2002 by the "British Journal of Sports Medicine" found that 6 g per day of citrulline supplementation promoted aerobic energy production and changes in muscle metabolism in healthy subjects during exercise.

Health Hazard Information of triethylamine



  1.Acute Effects:Acute exposure of humans to triethylamine vapor causes eye irritation, corneal swelling, and halo vision.  People have complained of seeing "blue haze" or having "smoky vision."  These effects have been reversible upon cessation of exposure.
 triethylamine,121-44-8
*Acute exposure can irritate the skin and mucous membranes in humans.
  *Acute animal tests in rats, mice, and rabbits, have demonstrated triethylamine to have moderate acute toxicity from inhalation, moderate to high acute toxicity from oral exposure, and high acute toxicity from dermal exposure.
  2.Chronic Effects (Noncancer):Chronic exposure of workers to triethylamine vapor has been observed to cause reversible corneal edema.
  *Chronic inhalation exposure has resulted in inflammation of the nasal passage in rats.Thickening of the interalveolar walls of the lungs, mucous accumulation in the alveolar spaces of the lungs, and hematological effects have also been reported in rats chronically exposed by inhalation.
  *Chronic inhalation exposure of rabbits has been reported to cause irritation of the lungs, edema, moderate peribronchitis, vascular thickening, eye lesions, and, at higher levels, liver, kidney, and heart effects.
  *The Reference Concentration (RfC) for triethylamine is 0.007 milligrams per cubic meter (mg/m3) based on inflammation of the nasal passages in rats. The RfC is an estimate (with uncertainty spanning perhaps an order of magnitude) of a continuous inhalation exposure to the human population (including sensitive subgroups) that is likely to be without appreciable risk of deleterious noncancer effects during a lifetime.  It is not a direct estimator of risk but rather a reference point to gauge the potential effects.  At exposures increasingly greater than the RfC, the potential for adverse health effects increases.  Lifetime exposure above the RfC does not imply that an adverse health effect would necessarily occur.
  *EPA has medium confidence in the studies on which the RfC was based because a concentration-response was evident, although a lowest-observed-adverse-effect level (LOAEL) could not be identified and a second species was not used; low confidence in the database as only a single reproductive/developmental study exists, which is by the oral route and is therefore not useful for inhalation risk assessment, and no chronic studies exist; and, consequently, low confidence in the RfC.
  *EPA has not established a Reference Dose (RfD) for triethylamine.
  3.Reproductive/Developmental Effects:No information is available on the reproductive or developmental effects of triethylamine in humans.
  *No reproductive or developmental effects were reported in a 3-generation study in rats exposed to triethylamine in drinking water; however, this study had limitations.
  4.Cancer Risk:No information is available on the carcinogenic effects of triethylamine in humans or animals.
  *EPA has not classified triethylamine with respect to potential carcinogenicity.

2013年8月9日星期五

What’s Rapamycin?

Rapamycin,53123-88-9


  Rapamycins are macrocyclic lactones that possess immunosuppressive, antifungal and antitumor properties. The parent compound, rapamycin, is approved as an immunosup-pressive agent for preventing rejection in patients receiving organ transplantation.
  rapamycin, also called sirolimus,  drug characterized primarily by its ability to suppress the immune system, which led to its use in the prevention of transplant rejection. Rapamycin is produced by the soil bacterium Streptomyces hygroscopicus. The drug’s name comes from Rapa Nui, the indigenous name of Easter Island, where the compound was originally discovered in soil samples in the 1970s.
  Rapamycin exerts its immunosuppressive effects by inhibiting the activation and proliferation ofT cells. It acts specifically on FK-binding protein 12 (FKBP12), a substance commonly referred to as an immunophilin because it binds to immunosuppressive drugs.
  A drug used to keep the body from rejecting organ and bone marrow transplants. Rapamycin blocks certain white blood cells that can reject foreign tissues and organs. It also blocks a protein that is involved in cell division. It is a type of antibiotic, a type of immunosuppressant, and a type of serine/threonine kinase inhibitor. Rapamycin is now called sirolimus.

The information about M-bromobenzoic acid

 M-bromobenzoic acid


Name:M-bromobenzoic acid (Related Reference)
EINECS:207-259-0
Molecular Formula:C7H5FO2
CAS Registry Number:456-22-4
Synonyms:Fluorobenzoicacid min white powder; Sodium orotate; 4-Fluorobenzoic acid; AKOS 92636; PFBA; P-FLUOROBENZOIC ACID; TIMTEC-BB SBB008568; RARECHEM AL BO 0053; 4-fluoro-benzoicaci; Benzoic acid, p-fluoro-
InChI:InChI=1/C7H5FO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,(H,9,10)
HS Code:29163900
Appearance:white crystalline powder
Molecular Weight:140.11
Density:1.479
Boiling Point:253.7 °C at 760 mmHg
Melting Point:182-184℃
Flash Point:107.2 °C
Storage Temperature:Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Refractive index:1.537
Solubility:Very soluble
Stability:Stable at room temperature in closed containers under normal storage and handling conditions.

2013年8月8日星期四

3-Glycidoxypropyltrimethoxysilane

3-Glycidoxypropyltrimethoxysilane


Name:3-Glycidoxypropyltrimethoxysilane (Related Reference)
EINECS:219-784-2
Molecular Formula:C9H20O5Si
CAS Registry Number:2530-83-8
Synonyms:((3-(Trimethoxysilyl)propoxy)methyl)oxirane;(3-(Glycidyloxy)propyl)trimethoxysilane;(3-Glycidoxypropyl)trimethoxysilane;1-(Glycidyloxy)-3-(trimethoxysilyl)propane; 3-(2,3-Epoxypropoxy)propyltrimethoxysilane;Glycidyl3-(trimethoxysilyl)propylether;Glycidyloxypropyltrimethoxysilane;
InChI:InChI=1/C9H20O5Si/c1-10-15(11-2,12-3)6-4-5-13-7-9-8-14-9/h9H,4-8H2,1-3H3
HS Code:29310095
Appearance:Colorless transparent liquid
Molecular Weight:236.34
Density:1.07
Boiling Point:120℃ (2 mmHg)
Melting Point:-50°C
Flash Point:122℃
Storage Temperature:2-8°C
Refractive index:1.428-1.43
Solubility:Slightly soluble
Stability:Stable under normal temperatures and pressures.

Intro to Flumethasone


  Flumetasone (usually as the pivalic acid ester flumetasone pivalate, trade name Locacorten or Locorten) is acorti costeroid for topical use. It is available in combination with clioquinol, under the trade name Locacorten-Vioform (in some countries Locorten-Vioform), for the treatment of otitis externa and otomycosis.
Flumethasone,2135-17-3
  1.Mechanism of action
  Flumethasone is a glucocorticoid receptor agonist. This complex binds to the nucleus causing a variety of genetic activation and repressions. The antiinflammatory actions of corticosteroids are thought to involve lipocortins, phospholipase A2 inhibitory proteins which, through inhibition arachidonic acid, control the biosynthesis of prostaglandins and leukotrienes. The immune system is suppressed by corticosteroids due to a decrease in the function of the lymphatic system, a reduction in immunoglobulin and complement concentrations, the precipitation of lymphocytopenia, and interference with antigen-antibody binding. Flumethasone binds to plasma transcortin, and it becomes active when it is not bound to transcortin.
  2.flumethasone with clioquinol ear drops
  USES: This medication is used to treat external ear infections or, when used in combination with oral antibiotics, to treat middle ear infections
  HOW TO USE: This drug is for use in the ear only. Learn proper ear cleaning and device usage techniques. Consult your doctor and pharmacist. Hold container in the hand for a few minutes if it has been refrigerated in order to warm it. To avoid contamination of the device do not touch the dropper tip or let it touch your ear or any other surface. For accuracy, have another person insert the drops for you if possible. To apply ear drops, wash hands first, then completely clean the ear canal. The usual dose is 2 to 3 drops twice daily or as directed by your doctor. Lie on your side or tilt the affected ear upward and place the prescribed number of drops into the ear. To help the drops roll into the ear (for adults) hold the earlobe up and back or (for children) hold the earlobe down and back. Keep the ear tilted for about two minutes so the medicine will be well absorbed or insert a soft cotton plug if so directed. Do not rinse the dropper. Replace cap after use. For best results, this medication must be used routinely as directed. Continue using it for the full time prescribed. Stopping this medication too soon may result in reinfection.

The chemical properties of Flumethasone

Flumethasone


Name:Flumethasone
EINECS:218-370-9
Molecular Formula:C22H28F2O5
CAS Registry Number:2135-17-3
Synonyms:U-10,974; Anaprime; Prestwick_229; Pregna-1,4-diene-3,20-dione, 6.alpha.,9-difluoro-11.beta.,17,21-trihydroxy-16.alpha.-methyl-; Flucorticin; 6alpha,9alpha-Difluoro-16alpha-methylprednisolone; U-10974; Fluvet; Cortexillar; RS 2177; Flumethason; Flucort (Veterinary); 6alpha-Fluorodexamethasone;
InChI:InChI=1/C22H28F2O5/c1-11-6-13-14-8-16(23)15-7-12(26)4-5-19(15,2)21(14,24)17(27)9-20(13,3)22(11,29)18(28)10-25/h4-5,7,11,13-14,16-17,25,27,29H,6,8-10H2,1-3H3/t11-,13+,14+,16+,17+,19+,20+,21+,22+/m1/s1
Molecular Weight:410.46
Density:1.36 g/cm3
Boiling Point:569.8 °C at 760 mmHg
Flash Point:298.4 °C
Storage Temperature:2-8°C
Refractive index:1.579
Usage:Flumethasone (CAS NO.2135-17-3) is a glucocorticoid. It is an anti-inflammatory and a corticosteroid for topical use. Besides, It is also used for the treatment of otitis externa and otomycosis.

2013年8月7日星期三

The side effect of Aminophylline

Aminophylline,317-34-0

  Aminophylline is a mixture of theophylline and ethylenediamine, , acting as a respiratory stimulant, smooth muscle relaxant, myocardial stimulant, and diuretic. It is used as a broncho dilator and also as an antidote to dipyridamole toxicity. Administration may be oral, intramuscular, intravenous, or rectal. If intravenous administration is too rapid it can cause circulatory collapse. Intramuscular administration should be done with caution because aminophylline is very irritating to the tissues. Oral administration must also be cautious because there could be gastric or urinary irritation.
  SIDE EFFECTS:Stomach pain/cramping, nausea, vomiting, diarrhea, loss of appetite, headache, trouble sleeping, irritability, restlessness, nervousness, shaking (tremors), flushing, and increased urination may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
  Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
  Tell your doctor immediately if any of these unlikely but serious side effects occur: confusion, dizziness, mental/mood changes, muscle twitching/pain/tenderness, weakness, rapid breathing.
  Tell your doctor immediately if any of these rare but very serious side effects occur:fainting, fast/slow/irregular heartbeat, dark/tarry stools, vomit that looks like coffee grounds, seizures.
  A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, red/scaly skin, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathin
  PRECAUTIONS: Before using aminophylline, tell your doctor or pharmacist if you are allergic to it; or to theophylline, theobromine, caffeine, or ethylenediamine; or if you have any other allergies.Before using this medication, tell your doctor or pharmacist your medical history, especially of: a certain breathing disorder (cystic fibrosis), a certain eye problem (glaucoma), diabetes, heart problems (e.g., congestive heart failure, irregular heartbeat), high blood pressure, current fever/flu-like symptoms, kidney disease, liver disease (e.g., cirrhosis), seizures, stomach/intestinal ulcer, thyroid disease.This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.Before having surgery, tell your doctor or dentist that you are taking this medication.Caution is advised when using this drug in the elderly because they may be more sensitive to its effects. Careful monitoring of side effects and drug blood levels is recommended.Caution is advised when using this drug in children, especially newborns and children younger than 1 year, because they may be more sensitive to its effects. Careful monitoring of side effects, drug blood levels, and dose adjustment is recommended.Duringpregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. Changes in your body during the last 3 months of pregnancy may affect the amount of this drug in your blood. Your doctor should carefully monitor the amount of drug in your blood, as well as any side effects, so that your dose may be changed if needed.This drug passes into breast milk and may have undesirable effects on a nursing infant (e.g., irritability). Consult your doctor before breast-feeding.

The information of (S)-(+)-2-Amino-3-methyl-1-butanol

(S)-(+)-2-Amino-3-methyl-1-butanol 


Name:(S)-(+)-2-Amino-3-methyl-1-butanol
Formula: C5H13NO
CAS Registry number:2026-48-4
Synonyms:(2S)-2-amino-3-methyl-butan-1-olL-Valinol
EINECS(EC#):217-975-5
Molecular Formula:C5H13NO (Products with the same molecular formula)
Molecular Weight:103.16
Inchi:InChI=1/C5H13NO/c1-4(2)5(6)3-7/h4-5,7H,3,6H2,1-2H3
InChIKey:NWYYWIJOWOLJNR-YFKPBYRVSA-N
Canonical SMILES:CC(C)C(CO)N
MOL File:2026-48-4.mol
Appearance:white to light yellow crystal powder
Density:0.926
Melting Point:30-32℃
Boiling Point:81℃ (8 torr)
Vapour:0.182mmHg at 25°C
Refractive Index:1.4538-1.4558
Flash Point:78℃
Alpha:16 o (C=10,ETOH)
Solubilities:Very soluble
Stability:Stable under normal temperatures and pressures. Absorbs carbon dioxide from the air.

2013年8月5日星期一

Why has veterinarian prescribed Megestrol Acetate on animals?


  Megestrol acetate(CAS.NO 595-33-5) is used to postpone estrus and alleviate false pregnancy. It may be used in cats to treat behavior problems (e.g. inter-male aggressive behavior, urine spraying, aggression towards people). It has also been used to treat a variety of skin conditions.
Megestrol acetate,595-33-5

  How do you give this medication?
  *Give this medicine to your pet as directed by your veterinarian. READ THE LABEL CAREFULLY.
  *If the medicine is a liquid, measure the dose with reasonable care.
  *Try to give this medication at about the same time each day.
  *DO NOT give your pet more medicine than directed and DO NOT give the drug more often than directed
  *DO NOT stop giving this medication to your pet unless directed by your veterinarian.
  *Try not to miss giving any doses.
  What if I miss giving a dose?
  Give the dose as soon as possible. If it is almost time for the next dose, skip the missed dose, and continue with the regular schedule. Do not give the pet two doses at once.
  How do I store this medicine?
  *Keep this medicine out of reach of children
  *Store this medicine in a cool, dry place at room temperature.
  *Do not store this medicine in the bathroom, near the kitchen sink or in damp places. The medicine may break down if exposed to heat or moisture.
  What are the potential side effects?
  *The following side effects have been reported: excessive thirst, excessive urination, personality changes, drowsiness, and increased weight. In dogs, changes in hair color may occur.
  *Notify your veterinarian if mammary changes or if side effects are noted.
  *Other side effects may occur. If the pet experiences anything unusual, contact your veterinarian.

What is the side effect and precautions of Megestrol Acetate?


  Megestrol acetate (CAS.NO 595-33-5) belongs to category f progestogen analogue drugs. Megace is an oral suspension that contains megestrol acetate, a synthetic derivative of the naturally occurring steroid hormone, progesterone. Progestogens are largely used as second or third line therapy in conditions such as cachexia, weight loss (as in HIV/AIDS), breast cancer and endometrial cancer.  
Megestrol acetate,595-33-5

  What are the possible side effects of megestrol acetate?
  Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
  Call your doctor at once if you have a serious side effect such as:
*high blood sugar (increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision, weight loss);
*nausea, vomiting, dizziness, weakness, or feeling like you might pass out;
*sudden numbness or weakness, especially on one side of the body;
*chest pain, sudden cough, wheezing, rapid breathing, fast heart rate; or
*high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, confusion).
  Less serious side effects may include:
*upset stomach;
*vaginal bleeding;
*mild skin rash;
*weakness,
*sleep problems (insomnia); or
*decreased interest in sex, impotence, trouble having an orgasm.
  Precautions: Before taking megestrol, tell your doctor or pharmacist if you are allergic to it or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
  Before using this medication, tell your doctor or pharmacist your medical history, especially of: adrenal gland problems (e.g., Cushing's syndrome), blood clots, congestive heart failure, diabetes, high blood pressure, kidney problems, unusual vaginal bleeding.
  High blood sugar (hyperglycemia) and worsening of diabetes may occur. Symptoms of high blood sugar include thirst, increased urination, confusion, drowsiness, flushing, rapid breathing, or fruity breath odor. If these symptoms occur, tell your doctor immediately. People with diabetes should monitor their blood sugar levels more frequently when they start taking this medication and whenever the dose changes since they may need to change their doses of diabetic medications.
  This drug may decrease adrenal gland activity. Make sure you tell your doctors and dentists of your megestrol acetate use and when you stopped using it. After stopping this drug, additional corticosteroids (e.g., prednisone or hydrocortisone) may be necessary in stressful situations such as trauma, major surgery or serious infection. Consult your doctor or pharmacist for details. Symptoms of adrenal problems include unusual weakness, dizziness, nausea and rapid weight loss.
  Kidney function declines as you grow older. This medication is removed by the kidneys. Therefore, elderly people may be more sensitive to this drug and to its side effects.
  This medication must not be used during pregnancy. Megestrol may cause harm to your unborn baby. If you become pregnant or think you may be pregnant, inform your doctor immediately. Women of childbearing age should use an effective form of birth control while using this medication. Consult your doctor for more details.
  Megestrol may pass into breast milk and could have undesirable effects on a nursing infant. Therefore, breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.
  

Intro to Megestrol acetate


  Megestrol acetate(CAS.NO 595-33-5) Oral Suspension contains megestrol acetate, a synthetic derivative of the naturally occurring steroid hormone, progesterone .Megestrol acetate is a white, crystalline solid chemically designated as 17α-(acetyloxy)6-methylpregna-4,6-diene-3,20-dione.Solubility at 37°C in water is 2 μg per mL, solubility in plasma is 24 μg per mL.Its molecular weight is 384.51.The empirical formula is C24H32O4 and the structural formula is represented as follows:

 Megestrol acetate,595-33-5

  Megestrol acetate is used mainly as an appetite stimulant in a variety of conditions and as an antineoplastic agent in the treatment of breast , endometrial , and prostate cancers.When given in relatively high doses, it can substantially increase appetite in most individuals, even those with advanced cancer, and is often used to boost appetite and induce weight gain in patients with cancer or HIV / AIDS -associated cachexia .It is also used as a contraceptive in combination with an estrogen at relatively low doses.
  In addition to its use in humans, megestrol acetate has been used extensively in veterinary medicine in the treatment of medical conditions in cats and dogs.

2013年8月1日星期四

Problems that maybe happen when taking Atorvastatin


  Atorvastatin is a member of the drug class known as statins, used for lowering blood cholesterol. It also stabilizes plaque and prevents strokes through anti-inflammatory and other mechanisms. Like all statins, atorvastatin works by inhibiting HMG-CoA reductase, an enzyme found in livertissue that plays a key role in production of cholesterol in the body.

Atorvastatin,134523-00-5
1. How to take atorvastain tablets?
  Take atorvastatin exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label. Do not break an atorvastatin tablet unless your doctor has told you.
  Atorvastatin is usually taken once a day, with or without food. Take the medicine at the same time each day. Your doctor may occasionally change your dose to make sure you get the best results.
  To be sure this medicine is helping your condition and is not causing harmful effects, your blood will need to be tested often. Visit your doctor regularly.
  Atorvastatin is only part of a complete program of treatment that also includes diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely. You may need to take atorvastatin on a long-term basis for the treatment of high cholesterol. Store at room temperature away from moisture, heat, and light.
  2.If you take more Atorvastatin Tablets than you should
  If you accidently take too many Atorvastatin Tablets (more than your usual daily dose) then contact your doctor or nearest hospital for advice.
  3.If you forget to take Atorvastatin Tablets
  If you forget to take a dose, just take your next scheduled dose at the correct time.
  Do not take a double dose to make up for a forgotten dose.
  4.If you stop taking Atorvastatin Tablets
  If you have any further questions on the use of this medicine or wish to stop your treatment, ask your doctor or pharmacist.
  5.What special dietary instructions should I follow?
  Eat a low-fat, low-cholesterol diet.Be sure to follow all exercise and dietary recommendations made by your doctor or dietitian.Avoid drinking large amounts [more than 1.2 liter (approximately 1 quart) per day] of grapefruit juice while taking atorvastatin.
  6. Possible side effects
  As stated earlier, myopathy with elevation of creatinine kinase (CK) and rhabdomyolysis are the most serious side effects, although rare at <1%. Headache is the most common side effect, occurring in more than 10% of patients. Side effects that occur in 1–10% of patients taking atorvastatin include:
  *Weakness
  *Insomnia and dizziness
  *Chest pain and peripheral edema
  *Rash
  *Abdominal pain, constipation, diarrhea, dyspepsia, flatulence, nausea
  *Urinary tract infection
  *Arthralgia, myalgia, back pain, arthritis
  *Sinusitis, pharyngitis, bronchitis, rhinitis
  *Infection, flu-like syndrome, allergic reaction
  Atorvastatin and other statins are associated with anecdotal reports of memory loss by consumers, which have been seen in clinical practice in a tiny percentage of users, particularly women. Evidence is conflicting with anecdotal reports contrasting with a well-established association of high cholesterol with dementia. However, it is known that cholesterol synthesis is necessary for normal neuron functioning. According to Pfizer, the manufacturer of Lipitor, clinical trials "do not establish a causal link between Lipitor and memory loss."
  Elevation of alanine transaminase (ALT) and aspartate transaminase (AST) has been described in a few cases.
  High-dose atorvastatin had also been associated with worsening glycemic control.
    7.How to store atorvastain tablets
    Keep out of the reach and sight of children.
  Store in the original package in order to protect from moisture. This medicine does not require any special temperature storage conditions.
  Do not use Atorvastatin Tablets after the expiry date which is stated on the carton label and blister foil after Exp. The expiry date refers to the last day of that month.
  Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.
  8.Other information should I know?
  Keep all appointments with your doctor and the laboratory. Your doctor may order certain lab tests during your treatment , especially if you develop symptoms of liver damage.
  Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking atorvastatin.
  Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
  It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

The medicine of Atorvastatin


   Atorvastatin is an oral drug that lowers the level of cholesterol in the blood. It belongs to a class of drugs referred to as statins, which includes lovastatin (Mevacor), simvastatin, (Zocor),fluvastatin (Lescol), and pravastatin (Pravachol) and rosuvastatin (Crestor). All statins, including atorvastatin, prevent the production of cholesterol in the liver by blocking HMG-CoA reductase, an enzyme that makes cholesterol. Statins reduce total cholesterol as well as LDL cholesterol in blood. LDL cholesterol is believed to be the "bad" cholesterol that is primarily responsible for the development of coronary artery disease. Reducing LDL cholesterol levels retards progression and may even reverse coronary artery disease. Atorvastatin also raises the concentrations of HDL ("good") cholesterol that protects against coronary artery disease and reduces the concentration of triglycerides in the blood.
Atorvastatin,134523-00-5

Prescribed for: Atorvastatin is used for the treatment of elevated total cholesterol, LDL, and triglycerides and to elevate HDL cholesterol. The effectiveness of atorvastatin in lowering cholesterol is dose-related, meaning that higher doses reduce cholesterol more. Atorvastatin preventsangina, stroke, heart attack, hospitalization for congestive heart failure, and revascularization procedures in individuals with coronary artery disease. Atorvastatin reduces the risk of myocardial infarction (heart attack), stroke, angina and revascularization procedures in adults with multiple risk factors for coronary artery disease. Atorvastatin also prevents heart attacks and strokes in patients with type 2 diabetes with multiple risk factors for coronary artery disease.
  Mechanism of action:As with other statins, atorvastatin is a competitive inhibitor of HMG-CoA reductase. Unlike most others, however, it is a completely synthetic compound. HMG-CoA reductase catalyzes the reduction of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) to mevalonate, which is the rate-limiting step in hepatic cholesterol biosynthesis. Inhibition of the enzyme decreases de novo cholesterol synthesis, increasing expression of low-density lipoprotein receptors (LDL receptors) on hepatocytes. This increases LDL uptake by the hepatocytes, decreasing the amount of LDL-cholesterol in the blood. Like other statins, atorvastatin also reduces blood levels of triglycerides and slightly increases levels of HDL-cholesterol.
    HOW TO TAKE ATORVASTATIN TABLETS:
  Before starting treatment, your doctor will advise a low-cholesterol diet: you should continue this diet whilst taking Atorvastatin Tablets.
  The usual starting dose of Atorvastatin Tablets is 10 mg once a day in adults and children aged 10 years or older.
  This may be increased if necessary by your doctor until you are taking the amount you need. Your doctor will adapt the dose at intervals of 4 weeks or more. The maximum dose of Atorvastatin Tablets is 80 mg once daily for adults and 20 mg once daily for children.
  Atorvastatin Tablets should be swallowed whole with a drink of water, and can be taken at any time of day, with or without food. However, try to take your tablet at the same time every day.
  Always take Atorvastatin Tablets exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure.
  The duration of treatment with Atorvastatin Tablets is determined by your doctor.
  Please ask your doctor if you think that the effect of Atorvastatin Tablets is too strong or too weak.