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Clobetasol

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Clobetasol Basic information

Product Name:
Clobetasol
Synonyms:
  • ClobetasolBase
  • Clobetasol Propionate 25122-46-7 / Base
  • 21-Chloro-9-fluoro-11β,17-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione
  • CLOBETASOLE PROPIONATE
  • CLOBETASOL-17-PROPIONATE
  • CLOBESTASOL PROPIONATE
  • Clobetasol (Betamethasone Impurity B)
  • (11β,16β)-21-Chloro-9-fluoro-11,17-dihydroxy-16-methylpregna-1,4-diene-3,20-dione
CAS:
25122-41-2
MF:
C22H28ClFO4
MW:
410.91
EINECS:
246-633-8
Product Categories:
  • Intermediates & Fine Chemicals
  • Pharmaceuticals
  • Steroids
Mol File:
25122-41-2.mol
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Clobetasol Chemical Properties

Melting point:
220-222°C
Boiling point:
555.1±50.0 °C(Predicted)
Density 
1.32±0.1 g/cm3(Predicted)
storage temp. 
-20°C Freezer
solubility 
Acetone (Slightly), DMSO (Slightly), Methanol (Slightly)
form 
Solid
pka
12.03±0.70(Predicted)
color 
White to Light Brown
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Safety Information

Hazard Codes 
T
Risk Statements 
61-48/20/21-53-62
Safety Statements 
53-36/37-45
Hazardous Substances Data
25122-41-2(Hazardous Substances Data)
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Clobetasol Usage And Synthesis

Chemical Properties

White to Off-White Solid

Originator

Dermovate,Glaxo,UK,1973

Uses

Clobetasol (Clobetasol Propionate EP Impurity G) is a topical corticosteroid. Glucocorticoid; anti-inflammatory.

Uses

Atorvastatin Intermediate

Definition

ChEBI: A 3-oxo-Delta1,Delta4-steroid that is 16beta-methylpregna-1,4-diene-3,20-dione bearing hydroxy groups at the 11beta and 17alpha posit ons, fluorine at position 9, and a chlorine substituent at position 21. It is used as its 17alpha-propionate ester to treat various skin disorders, including exzema and psoriasis.

Manufacturing Process

A solution of betamethasone 21-methanesulfonate (4 g) in dimethylformamide (25 ml) was treated with lithium chloride (4 g) and the mixture heated on the steam bath for 30 minutes. Dilution with water gave the crude product which was recrystallized to afford the title compound, MP 226°C.
Clobetasol is usually converted to the propionate as the useful form by reaction with propionic anhydride.

brand name

Clobex (Galderma); Clobex (Galderma); Embeline (Healthpoint); Olux (Connetics); Temovate (Altana).

Therapeutic Function

Corticosteroid, Antiinflammatory

ClobetasolSupplier

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