9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl Acetate

Product Name: 9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl Acetate
CAS No.: 912-38-9
Chemical Name: 9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl Acetate
Synonyms: 21-Acetyloxy-9β,11β-epoxy-17-hydroxy-16β-methylpregna-1,4-diene-3,20-dione;Betamethasone Impurity 18;Betamethasone Acetate Impurity;Betamethasone Acetate - Impurity D;Betamethasone Acetate EP Impurity D;21-O-Acetyl Betamethasone 9, 11-Epoxide;Betamethasone Impurity 21（Betamethasone Acetate EP Impurity D）;Betamethasone Impurity 18 (Desoximetasone Beta Methyl Epoxide 21-Acetate);9,11-Epoxy-17,21-dihydroxy-16-methylpregna-1,4-diene-3,20-dione 21-acetate;9β,11β-Epoxy-17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione 21-Acetate
CBNumber: CB9896352
Molecular Formula: C24H30O6
Formula Weight: 414.4914
MOL File: 912-38-9.mol

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9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl Acetate Property

Melting point:: 198-203°C
Boiling point:: 575.1±50.0 °C(Predicted)
Density: 1.29±0.1 g/cm3(Predicted)
storage temp.: -20°C Freezer
solubility: Chloroform (Slightly), Dioxane (Slightly), DMSO (Slightly), Methanol (Slightly)
form: Solid
pka: 12.51±0.70(Predicted)
color: White

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Safety

HS Code: 2937290000

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P314Get medical advice/attention if you feel unwell.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Usbiological

Product number: 011215
Product name: 9β,11β-Epoxy-17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione 21-Acetate
Packaging: 1mg
Price: $418
Updated: 2026/06/03

ChemScene

Product number: CS-0854708
Product name: Betamethasone acetate impurity 2
Purity: ≥95%
Packaging: 50mg
Price: $213
Updated: 2026/06/04

ChemScene

Product number: CS-0854708
Product name: Betamethasone acetate impurity 2
Purity: ≥95%
Packaging: 100mg
Price: $284
Updated: 2026/06/04

ChemScene

Product number: CS-0854708
Product name: Betamethasone acetate impurity 2
Purity: ≥95%
Packaging: 200mg
Price: $426
Updated: 2026/06/04

ChemScene

Product number: CS-0854708
Product name: Betamethasone acetate impurity 2
Purity: ≥95%
Packaging: 1g
Price: $1065
Updated: 2026/06/04

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9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl Acetate Chemical Properties,Usage,Production

Chemical Properties

White Solid

Uses

9β,11β-Epoxy-17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione 21-Acetate is an intermediate in the production of Betamethasone (B327000), which is a glucocorticoid used as an anti-inflammatory agent.

9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl Acetate Preparation Products And Raw materials

Raw materials

Progesterone Ethylene glycol Methyl bromide

Preparation Products

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9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl Acetate Suppliers

Canada 1 China 32 India 5 United States 1 Global 39

J & K SCIENTIFIC LTD.

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912-38-9, 9,11β-Epoxy-17-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-diene-21-yl AcetateRelated Search:

Betamethasone Impurity 35 9-Bromo-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione-21-acetate 11-Keto Betamethasone Betamethasone 21-phosphate disodium Betamethasone Impurity 36 Betamethasone Valerate EP Impurity I Betamethasone 17,21-dipropionate 9-Fluoro-11β,17,21-trihydroxy-16β-Methylpregna-1,4-diene-3,20-dione 21-Methanesulfonate 17-Propionate 11alpha,17,21-trihydroxy-16beta-methylpregna-1,4-diene-3,20-dione TUIYCBORCUOUBA-DEGNENOVSA-N Betamethasone 21-Acetate-17-propionate Betamethasone EP Impurity I 6-Bromo-betamethasone 17,21-Dipropionate Betamethasone Impurity 38 Beclomethasone dipropionate Betamethasone Impurity 16 Betamethasone Acetate EP Impurity C Betamethasone-17-ketone

(9β)-9,11β-Epoxy-16β-methyl-17,21-dihydroxypregna-1,4-diene-3,20-dione 21-acetate

21-Acetyloxy-9β,11β-epoxy-17-hydroxy-16β-methylpregna-1,4-diene-3,20-dione

beta,11beta-Epoxy-17,21-dihydroxy-16beta-methylpregna-1,4-diene-3,20-dione 21-acetate

Betamethasone Acetate EP Impurity D

9beta,11beta-epoxy-17,21-dihydroxy-16beta-methylpregna-1,4-diene-3,20-dione 21-acetate

9,11-Epoxy-17,21-dihydroxy-16-methylpregna-1,4-diene-3,20-dione 21-acetate

Betamethasone Impurity 18

Betamethasone Impurity 21（Betamethasone Acetate EP Impurity D）

Betamethasone Acetate impurity 2/Betamethasone Acetate EP Impurity D/9β,11β-Epoxy-17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione 21-Acetate

Betamethasone Impurity 18 (Desoximetasone Beta Methyl Epoxide 21-Acetate)

21-O-Acetyl Betamethasone 9, 11-Epoxide

9β,11β-Epoxy-17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione 21-Acetate

Betamethasone Acetate - Impurity D

9β,11β-epoxy-17α,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione 21-acetate

Pregna-1,4-diene-3,20-dione, 21-(acetyloxy)-9,11-epoxy-17-hydroxy-16-methyl-, (9β,11β,16β)-

9,11beta-Epoxy-17-hydroxy-16beta-methyl-3,20-dioxo-9beta-pregna-1,4-diene 21-Acetate

Betamethasone Acetate Impurity

Betamethasone Acetate EP Impurity D (Betamethasone Acetate USP Related Compound D)

(9β,11β,16β)-21-(Acetyloxy)-9,11-epoxy-17-hydroxy-16-methylpregna-1,4-diene-3,20-dione

912-38-9

Intermediates & Fine Chemicals

Pharmaceuticals

Steroids