9,11-Didehydroestriol

9,11-二脱氢雌三醇

Also known as: 9,11-Didehydrooestriol, Estra-1,3,5(10),9(11)-tetraene-3,16,17-triol, (16α,17β)-, Estra-1,3,5,9(11)-tetraene-3,16a,17b-triol, Estra-1,3,5,9(11)-tetraene-3,16alpha,17beta-triol, Conjugated Estrogens EP Impurity A, Estriol EP Impurity A, Estriol Impurity A, (8S,13S,14S,16R,17R)-13-methyl-6,7,8,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,16,17-triol

9,11-Didehydroestriol (CAS 246021-20-5) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C18H22O3 and a molecular weight of 286.36500 g/mol. It is also known as 9,11-Didehydrooestriol, Estra-1,3,5(10),9(11)-tetraene-3,16,17-triol, (16α,17β)- and Estra-1,3,5,9(11)-tetraene-3,16a,17b-triol. Key properties include a boiling point of 491.918ºC at 760 mmHg, a density of 1.314g/cm3 and a flash point of 234.135ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
246021-20-5
Jingsj CID
J-1144091-0
Molecular Formula
C18H22O3
Chinese Name
9,11-二脱氢雌三醇
Molecular Weight
286.36500 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point491.918ºC at 760 mmHg
Density1.314g/cm3
Flash Point234.135ºC

GHS Safety & Compliance

Health HazardSignal word: Warning

Frequently Asked Questions

What is the CAS number of 9,11-Didehydroestriol?

The CAS number of 9,11-Didehydroestriol is 246021-20-5.

What are the molecular formula and molecular weight of 9,11-Didehydroestriol?

9,11-Didehydroestriol has molecular formula C18H22O3 and molecular weight 286.36500 g/mol.

Is 9,11-Didehydroestriol hazardous?

9,11-Didehydroestriol has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "9,11-Didehydroestriol (CAS 246021-20-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1144091-0 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.