9beta,11beta-Epoxy-17alpha,21-dihydroxy-16beta-methylene-pregna-1,4-diene-3,20-dione

Also known as: DB11, 16-beta Methyl Epoxide, 16-BETA METHYL EPOXIDE, Betamethasone 9,11-Epoxide, 9β,11β-Epoxy-17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione, (9β,11β,16β)-17,21-Dihydroxy-16-methyl-9,11-epoxypregna-1,4-diene-3,20-dione, 9beta,11beta-Epoxy-1, Pregna-1,4-diene-3,20-dione, 9,11-epoxy-17,21-dihydroxy-16-methyl-, (9β,11β,16β)-, 9β,11β-Epoxy-16β-methyl-17,21-dihydroxypregna-1,4-diene-3,20-dione, 16-betaMethylEpoxide

9beta,11beta-Epoxy-17alpha,21-dihydroxy-16beta-methylene-pregna-1,4-diene-3,20-dione (CAS 981-34-0) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C22H28O5 and a molecular weight of 372.455 g/mol. Key properties include a melting point of 210-220ºC, a boiling point of 564.9±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 198.1±23.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 981-34-0
Jingsj CID: J-1377693-6
Molecular Formula: C₂₂H₂₈O₅
Molecular Weight: 372.455 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	210-220ºC
Boiling Point	564.9±50.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	198.1±23.6 °C
Exact Mass	372.193665
PSA	87.13000
LogP	2.23
Vapor Pressure	0.0±3.5 mmHg at 25°C
Refractive Index	1.616
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2918990090
Summary	2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 9beta,11beta-Epoxy-17alpha,21-dihydroxy-16beta-methylene-pregna-1,4-diene-3,20-dione?

The CAS number of 9beta,11beta-Epoxy-17alpha,21-dihydroxy-16beta-methylene-pregna-1,4-diene-3,20-dione is 981-34-0.

What are the molecular formula and molecular weight of 9beta,11beta-Epoxy-17alpha,21-dihydroxy-16beta-methylene-pregna-1,4-diene-3,20-dione?

9beta,11beta-Epoxy-17alpha,21-dihydroxy-16beta-methylene-pregna-1,4-diene-3,20-dione has molecular formula C22H28O5 and molecular weight 372.455 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "9beta,11beta-Epoxy-17alpha,21-dihydroxy-16beta-methylene-pregna-1,4-diene-3,20-dione (CAS 981-34-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1377693-6 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.