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

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 2;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
CBNumber:
CB9896352
Molecular Formula:
C24H30O6
Molecular Weight:
414.49
MDL Number:
MFCD28359078
MOL File:
912-38-9.mol
Last updated:2026-05-28 04:39:06

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

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
FDA UNII Q4RBW718KS

SAFETY

Risk and Safety Statements

Symbol(GHS)  Health Hazard (GHS08)
GHS08
Signal word  Warning
Hazard statements  H373
Precautionary statements  P260-P314-P501
HS Code  2937290000

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

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Usbiological 011215 9β,11β-Epoxy-17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione 21-Acetate 912-38-9 1mg $418 2026-06-03 Buy
ChemScene CS-0854708 Betamethasone acetate impurity 2 ≥95% 912-38-9 50mg $213 2026-06-04 Buy
ChemScene CS-0854708 Betamethasone acetate impurity 2 ≥95% 912-38-9 100mg $284 2026-06-04 Buy
ChemScene CS-0854708 Betamethasone acetate impurity 2 ≥95% 912-38-9 200mg $426 2026-06-04 Buy
ChemScene CS-0854708 Betamethasone acetate impurity 2 ≥95% 912-38-9 1g $1065 2026-06-04 Buy
Product number Packaging Price Buy
011215 1mg $418 Buy
CS-0854708 50mg $213 Buy
CS-0854708 100mg $284 Buy
CS-0854708 200mg $426 Buy
CS-0854708 1g $1065 Buy

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

Preparation Products

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

Global( 42)Suppliers
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Chemsky(shanghai)International Co.,Ltd. 021-50135380 shchemsky@sina.com China 32273 50
ChemCell Biomedicine Co.,Ltd. 020-13556033878 2965585218 13556033878 chemcell@hotmail.com China 369 52
Shenzhen Polymeri Biochemical Technology Co., Ltd. +86-400-002-6226 sales@rrkchem.com China 57336 58
Guangzhou Dreampharm Biotechnology Co., Ltd. 020-36607679; 13502246435 3008233746@qq.com China 9968 12
Hefei fuya biotechnology co. LTD 18096409024 sales02@foreversyn.com China 1934 58
Cato Research Chemicals Inc. +86-020-81960175-877 4000-868-328;4000-868-328 tianwen.zhan@cato-chem.com United States 10384 58
Meng Cheng Technology (Shanghai) Co., LTD 400-820-6829 sales@mitachieve.com China 8857 58
SHENZHEN PHYSTANDARD BIO-TECH CO.,LTD 0755-83725350 13380397412 3001280422@qq.com China 10000 58
LGC Science (Shanghai) Ltd. 17717235263 offer.de@lgcgroup.com China 19036 58
(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 Betamethasone acetate impurity 2 2-((4aS,4bS,5aS,6aS,7R,8S,9aS,9bS)-7-Hydroxy-4a,6a,8-trimethyl-2-oxo-2,4a,5a,6,6a,7,8,9,9a,9b,10,11-dodecahydrocyclopenta[1,2]phenanthro[4,4a-b]oxiren-7-yl)-2-oxoethyl acetate (Betamethasone impurity) 912-38-9 Intermediates & Fine Chemicals Pharmaceuticals Steroids