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ChemicalBook--->CAS DataBase List--->378-44-9

378-44-9

378-44-9 Structure

378-44-9 Structure
IdentificationMore
[Name]

Betamethasone
[CAS]

378-44-9
[Synonyms]

1,4-PREGNADIEN-9-ALPHA-FLUORO-16-BETA-METHYL-11-BETA, 17,21-TRIOL-3,20-DIONE
1,4-PREGNADIENE-3,20-DIONE-9ALPHA-FLUORO-16BETA-METHYL-11BETA,17ALPHA,21-TRIOL
9A-FLUORO-11B, 17A, 21-TRIHYDROXY-16B-METHYL-1, 4-PREGNADIENE-3, 20-DIONE
9a-fluoro-11b,17a,21-trihydroxy-16b-methylpregna-1,4-diene-3,20-dione
9ALPHA-FLUORO-11BETA,17ALPHA,21-TRIHYDROXY-16BETA-METHYL-1,4-PREGNADIENE-3,20-DIONE
9ALPHA-FLUORO-11BETA,17ALPHA,21-TRIHYDROXY-16BETA-METHYLPREGNA-1,4-DIENE-3,20-DIONE
9ALPHA-FLUORO-16BETA-METHYL-11BETA,17ALPHA,21-TRIHYDROXY-1,4-PREGNADIENE-3,20-DIONE
9ALPHA-FLUORO-16BETA-METHYLPREDNISOLONE
BETADEXAMETHASONE
BETAMETHASONE
FLUBENISOLONE
NCS-39470
SCH-4831
(11beta,16beta)-9-Fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione
16-beta-methyl-1,4-pregnadiene-9-alpha-fluoro-11-beta,17-alpha,21-triol-3,20
16-beta-Methyl-1,4-pregnadiene-9-alpha-fluoro-11-beta,17-alpha,21-triol-3,20-dione
17,21-trihydroxy-16-beta-methylpregna-1,4-diene-3,20-9-alpha-fluoro-11-bet
6beta)-
9-alpha-Fluoro-11-beta,17,21-trihydroxy-16-beta-methylpregna-1,4-diene-3,20-dione
9-alpha-fluoro-11-beta,17-alpha,21-trihydroxy-16-beta-methylpregna-1,4-diene
[EINECS(EC#)]

206-825-4
[Molecular Formula]

C28H37FO7
[MDL Number]

MFCD00062969
[Molecular Weight]

504.59
[MOL File]

378-44-9.mol
Chemical PropertiesBack Directory
[Appearance]

White to Off-White Solid
[Melting point ]

235-237°C
[alpha ]

D +108° (acetone)
[Boiling point ]

568.2±50.0 °C(Predicted)
[density ]

1.1283 (estimate)
[refractive index ]

118 ° (C=1, Dioxane)
[storage temp. ]

0-6°C
[solubility ]

Practically insoluble in water, sparingly soluble in anhydrous ethanol, very slightly soluble in methylene chloride.
[form ]

neat
[pka]

12.13±0.70(Predicted)
[color ]

White to Off-White
[Water Solubility ]

58mg/L(25 ºC)
[Usage]

Glucocorticoid
[Merck ]

1180
[LogP]

2.01 at 25℃
[CAS DataBase Reference]

378-44-9(CAS DataBase Reference)
[NIST Chemistry Reference]

Pregna-1,4-diene-3,20-dione, 9alpha-fluoro-11beta,17alpha,21-trihydroxy-16beta-methyl-(378-44-9)
[EPA Substance Registry System]

Pregna-1,4-diene-3,20-dione, 9-fluoro-11,17,21-trihydroxy-16-methyl-, (11.beta.,16.beta.)- (378-44-9)
Safety DataBack Directory
[Hazard Codes ]

Xi,Xn
[Risk Statements ]

R40:Limited evidence of a carcinogenic effect.
[Safety Statements ]

S22:Do not breathe dust .
S36:Wear suitable protective clothing .
[WGK Germany ]

2
[RTECS ]

TU4000000
[HS Code ]

29372200
[Hazardous Substances Data]

378-44-9(Hazardous Substances Data)
[Toxicity]

LD50 oral in mouse: > 4500mg/kg
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Betamethasone 21-acetate-->Hydrochloric acid-->6 beta-hydroxybetamethasone 17-propionate-->Betamethasone 17,21-dipropionate-->6-hydroxybetamethasone-->9-fluoro-11beta,17,21-trihydroxy-16beta-methylpregna-1,4-diene-3,20-dione 17-propionate
Hazard InformationBack Directory
[Description]

Shortly after the introduction of dexamethasone, betamethasone, which differs from dexamethasone only in configuration of the 16-methyl group, was made available for the treatment of rheumatic diseases and dermatologic disorders. This analogue, which contains a 16β-methyl group, has received sufficient clinical trial examination to indicate that it is as effective as dexamethasone or, perhaps, even slightly more active. Although this drug has been reported to be less toxic than other steroids, some clinical investigators suggest that it is best used for short-term therapy.
[Originator]

Celestone,Schering,US,1961
[Definition]

ChEBI: Betamethasone is a glucocorticoid, a 20-oxo steroid, a 21-hydroxy steroid, a 17alpha-hydroxy steroid, a fluorinated steroid, an 11beta-hydroxy steroid, a 3-oxo-Delta(1),Delta(4)-steroid, a primary alpha-hydroxy ketone and a tertiary alpha-hydroxy ketone. It has a role as an anti-inflammatory drug, an anti-asthmatic agent and an immunosuppressive agent. It derives from a hydride of a pregnane.
[Manufacturing Process]

Betamethasone acetate is converted to betamethasone by means of hydrochloric acid in a methanol-chloroform-water mixture as described in US Patent 3,164,618.
[Brand name]

Celestone Syrup and Tablets (Schering).
[Therapeutic Function]

Glucocorticoid
[General Description]

Betamethasone, 9-fluoro-11β,17,21-trihydroxy-16β-methylpregna-1,4-diene-3,20-dione,is available as a variety of ester derivatives.
Betamethasone valerate, USP (17-valerate)
Betamethasone acetate, USP (21-acetate)
Betamethasone sodium phosphate, USP (21-sodiumphosphate)
Betamethasone dipropionate, USP (17-propionate,21-propionate).
[Flammability and Explosibility]

Nonflammable
[Biochem/physiol Actions]

Betamethasone, an?isomer?of dexamethasone is also termed as 9α-fluoro-16β-methyl-11 β,17,21-trihydroxypregna-1,4-dien-3,20-dione or 9α-fluoro-16β-methylprednisolone (27.1.52). It can be used as an anti-itch agent and treating dermatitis?and?eczema.
[Clinical Use]

Corticosteroid:

Suppression of inflammatory and allergic disorders

Congenital adrenal hyperplasia
[Side effects]

Toxic side effects, such as increased appetite, weight gain, and facial mooning, occur with prolonged use.
[Safety Profile]

Low toxicity by ingestion. Anexperimental teratogen. Other experimental reproductiveeffects. When heated to decomposition it emits toxicfumes of F-.
[Synthesis]

Betamethasone is 9α-fluoro-16β-methyl-11 β,17,21-trihydroxypregna- 1,4-dien-3,20-dione, or simply 9α-fluoro-16β-methylprednisolone (27.1.52). As seen from the chemical name of the drug, betamethasone only differs from dexamethasone in the orientation of the methyl group at C16. The proposed method of synthesis differs from the other method in a number of details and successive reactions besides the first stage, in particular concerning the addition of the methyl group at C16 of the steroid ring. Betamethasone, like dexamethasone, is synthesized from 3α-acetoxy-16-pregnen-11,20-dione; however, the methyl group at C16 of the steroid ring is not reacted with methylbromide, but rather is reacted with diazomethane followed by hydrogenation of the double bond between carbon atoms C16–C17 of the steroid ring using a palladium on carbon catalyst, which results in the corresponding β-orientation of the introduced methyl group.
[Veterinary Drugs and Treatments]

Betamethasone is 9α-fluoro-16β-methyl-11 β,17,21-trihydroxypregna- 1,4-dien-3,20-dione, or simply 9α-fluoro-16β-methylprednisolone (27.1.52). As seen from the chemical name of the drug, betamethasone only differs from dexamethasone in the orientation of the methyl group at C16. The proposed method of synthesis differs from the other method in a number of details and successive reactions besides the first stage, in particular concerning the addition of the methyl group at C16 of the steroid ring. Betamethasone, like dexamethasone, is synthesized from 3α-acetoxy-16-pregnen-11,20-dione; however, the methyl group at C16 of the steroid ring is not reacted with methylbromide, but rather is reacted with diazomethane followed by hydrogenation of the double bond between carbon atoms C16–C17 of the steroid ring using a palladium on carbon catalyst, which results in the corresponding β-orientation of the introduced methyl group.
[Drug interactions]

Potentially hazardous interactions with other drugs Aldesleukin: avoid concomitant use. Antibacterials: metabolism accelerated by rifampicin; metabolism possibly inhibited by erythromycin; concentration of isoniazid possibly reduced. Anticoagulants: efficacy of coumarins and phenindione may be altered.
Antiepileptics: metabolism accelerated by carbamazepine, fosphenytoin, phenobarbital, phenytoin and primidone.
Antifungals: increased risk of hypokalaemia with amphotericin - avoid; metabolism possibly inhibited by itraconazole and ketoconazole.
Antivirals: concentration possibly increased by ritonavir.
Ciclosporin: rare reports of convulsions in patients on ciclosporin and high-dose corticosteroids.
Cobicistat: concentration of betamethasone possibly increased.
Diuretics: enhanced hypokalaemic effects of acetazolamide, loop diuretics and thiazide diuretics.
Vaccines: high dose corticosteroids can impair immune response to vaccines; avoid with live vaccines.
[Metabolism]

Corticosteroids are metabolised mainly in the liver but also in other tissues, and are excreted in the urine. The slower metabolism of the synthetic corticosteroids with their lower protein-binding affinity may account for their increased potency compared with the natural corticosteroids.
[Purification Methods]

Betamethasone crystallises from ethyl acetate, and has max at 238nm (log 4.18) in MeOH. The 21-acetate [287-24-6] crystallises from Me2CO/Et2O (charcoal) m 196-201o (205-208o) and has [] D 20 +140o (CHCl3). [Taub et al. J Am Chem Soc 82 4012 1960, Olivetto et al. J Am Chem Soc 80 6688 1958, Beilstein 8 IV 3501.]
[References]

[1] pharmacology review(s)-fda.
Questions And AnswerBack Directory
[hormone drugs]

Betamethasone, belongs to adrenal corticosteroids, it is a isomer of dexamethasone , and the role of betamethasone is similiar to prednisolone and dexamethasone , it has anti-inflammatory, anti-rheumatic, anti-allergic and suppression of the immune and other pharmacological effects, its anti-inflammatory effect is stronger than dexamethasone, triamcinolone, hydrocortisone etc. , it can reduce and prevent tissue response to inflammation and eliminate heat, redness and swelling caused by local non-infectious inflammation, thereby reducing the performance of inflammation, anti-inflammatory effect of this product 0.3mg is equal to dexamethasone 0.75mg, prednisone 5mg or 25mg cortisone .
Betamethasone sodium retention effect is a hundred times more than hydrocortisone, in primary adrenal hypofunction, it can be used together with glucocorticoid for replacement therapy ,and it is used for preventing or inhibiting cell-mediated immune response, delaying allergic reactions and reducing the primary immune response expansion ,it is used for low renin and low aldosterone syndrome and autonomic neuropathy induced orthostatic hypotension.
Currently betamethasone is also used for the treatment of active rheumatoid arthritis, rheumatoid arthritis, lupus, severe bronchial asthma, severe dermatitis, acute leukemia, atopic dermatitis, eczema, neurodermatitis, seborrheic dermatitis, and pruritus and comprehensive treatment of certain infections.
The product is contraindicated in severe psychiatric history, active duodenal ulcer, recent gastrointestinal anastomosis, heavier osteoporosis, overt diabetes, severe hypertension, virus , bacterial, fungal infections which are failed to control by the use of antimicrobial agents , thrombophlebitis, skin infections, such as impetigo, tinea, jock itch and so on.
The above information is edited by the chemicalbook of Tian Ye.
[Chemical Properties]

White crystalline powder. Mp 231-234 deg.] C (decomposition). Odorless. Acetate Betamethasone ([987-24-6]) is also white crystalline powder, melting point 205-208 ℃, slightly soluble in alcohol, ethanol, and very slightly soluble in chloroform or ether, insoluble in water, odorless.
[Uses]

Hormone drugs.It is mainly used for anti-inflammatory and anti-allergic. It is suitable for rheumatoid arthritis and various skin diseases. Betamethasone role is similiar to dexamethasone, its anti-inflammatory effect is stronger than dexamethasone, triamcinolone, hydrocortisone and it has few side effects.
[production method]

According to U.S. Patent No. 3,164,618, betamethasone acetate is dealt with hydrochloric acid in methanol-chloroform-water mixture , it can be converted to betamethasone.
[Category]

Toxic substances
[Toxicity grading]

Middle toxic
[Acute toxicity]

Oral-mouse LD50:> 4500 mg/kg
[Flammability and hazard characteristics]

Combustible;Its combustion produces toxic fumes of fluoride.
[Storage Characteristics]

Ventilated, low-temperature ,dry storeroom.
[Extinguishing agent]

Dry powder , foam, sand, carbon dioxide, water spray.
Spectrum DetailBack Directory
[Spectrum Detail]

Betamethasone(378-44-9)MS
Betamethasone(378-44-9)13CNMR
Betamethasone(378-44-9)IR1
Betamethasone(378-44-9)IR2
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

378-44-9(sigmaaldrich)
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