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CAS 1150561-23-1
3-Ethoxy-16-(phenylsulfinyl)androsta-3,5-dien-17-one
Codes: (III)169995-10-a
Application context (from source-drug indications)
ContraceptionDrospirenoneStomatitis, aphthousDrospirenonePremenstrual dysphoric disorderDrospirenonePremenstrual syndromeDrospirenoneDysmenorrhoeaDrospirenoneDepressionDrospirenone
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Drospirenone | 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.
(3aS,3bR,9aR,9bS,11aS)-9a,11a-Dimethyl-1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthrene-1,7-dione→(8R,9S,10R,13S,14S)-3-Ethoxy-10,13-dimethyl-1,2,7,8,9,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-17-one→3-Ethoxy-16-(phenylsulfinyl)androsta-3,5-dien-17-one→16-(Phenylsulfinyl)androst-4-ene-3,17-dione→Androsta-4,15-diene-3,17-dione→(4aR,4bS,6aS,7aS,8aS,8bR,8cR)-4a,6a-Dimethyl-4,4a,4b,6,6a,7a,8,8a,8b,8c,9,10-dodecahydrocyclopropa[4,5]cyclopenta[1,2-a]phenanthrene-2,7(3H,5H)-dione→(4aR,4bS,6aS,7aS,8aS,8bS,8cR)-4a,6a-Dimethyl-4,4a,4b,6,6a,7a,8,8a,8b,8c-decahydrocyclopropa[4,5]cyclopenta[1,2-a]phenanthrene-2,7(3H,5H)-dione→6beta,7beta,15beta,16beta-Dimethylene-17beta-spirooxiranoandrost-4-en-3-one→Carbethoxyacetic ester→(1R,2R,4R,10R,11S,14S,15S,16S,18S,19S)-10,14-Dimethyl-5',7-dioxospiro[hexacyclo[9.8.0.0(2,4).0(5,10).0(14,19).0(16,18)]nonadecane-15,2'-oxolan]-5-ene-4'-carboxylic acid
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