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CAS 168131-50-8
(8S,9S,10R,13S,14S)-13-ethyl-1,2,4,7,8,9,10,12,13,14,15,16-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolane]-11,17-dione
Codes: ETON-028
Application context (from source-drug indications)
ContraceptionEtonogestrelAcquired immunodeficiency syndromeEtonogestrelDysmenorrhoeaEtonogestrel血崩EtonogestrelBenign prostatic hyperplasiaEtonogestrel月经失调Etonogestrel
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Etonogestrel | Tier C — Watch / trade | - |
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
(8S,9S,10R,11R,13S,14S)-13-ethyl-11-hydroxy-1,6,7,8,9,10,11,12,13,14,15,16-dodecahydro-3H-cyclopenta[a]phenanthrene-3,17(2H)-dione→(8S,9S,10R,13S,14S)-13-ethyl-11-methylene-1,6,7,8,9,10,11,12,13,14,15,16-dodecahydro-3H-cyclopenta[a]phenanthrene-3,17(2H)-dione→(8S,9S,10R,13S,14S)-13-ethyl-6,7,8,9,10,12,13,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,11,17(2H)-trione→(8S,9S,10R,13S,14S)-13-ethyl-1,2,4,7,8,9,10,12,13,14,15,16-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolane]-11,17-dione→(8S,9S,10R,13S,14S)-13-ethyl-17-hydroxy-1,4,7,8,9,10,12,13,14,15,16,17-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolan]-11(2H)-one→(8S,9S,10R,13S,14S)-13-ethyl-11-methylene-1,2,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolan]-17-ol→(8S,9S,10R,13S,14S)-13-ethyl-11-methylene-1,4,7,8,9,10,11,12,13,14,15,16-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolan]-17(2H)-one
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