(8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one

(8R,9S,10R,13S,14S,17S)-13-乙基-17-乙炔基-17-羟基-1,2,6,7,8,9,10,11,12,14,15,16-十二氢环戊[a]菲-3-酮

Also known as: 17-epi-Levonorgestrel, 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy- (9CI), Levonorgestrel Impurity 17

(8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one (CAS 178737-52-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C21H28O2 and a molecular weight of 312.4 g/mol. It is also known as 17-epi-Levonorgestrel, 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy- (9CI) and Levonorgestrel Impurity 17. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 178737-52-5
Jingsj CID: J-713794-1
Molecular Formula: C₂₁H₂₈O₂
Chinese Name: (8R,9S,10R,13S,14S,17S)-13-乙基-17-乙炔基-17-羟基-1,2,6,7,8,9,10,11,12,14,15,16-十二氢环戊[a]菲-3-酮
Molecular Weight: 312.4 g/mol
Category: Ketones
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of (8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one?

The CAS number of (8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one is 178737-52-5.

What are the molecular formula and molecular weight of (8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one?

(8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one has molecular formula C21H28O2 and molecular weight 312.4 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(8R,9S,10R,13S,14S,17S)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one (CAS 178737-52-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-713794-1 (accessed 2026-10-26).

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