← Back to patent-cliff list
CAS 1253857-90-7
3,3-(2,2-Dimethyl-1,3-propylenedioxy)-17beta,17beta-(methyleneoxy)estra-5(10),9(11)-diene
Codes：(IV)90248-3-a
Application context (from source-drug indications)
避孕地诺孕素/戊酸雌二醇月经过多地诺孕素/戊酸雌二醇避孕行为地诺孕素/戊酸雌二醇盆腔疼痛地诺孕素/戊酸雌二醇头痛地诺孕素/戊酸雌二醇痛经地诺孕素/戊酸雌二醇
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| 地诺孕素/戊酸雌二醇Dienogest/Estradiol Valerate | 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.
Estra-4,9-diene-3,17-dione→1,3-Dihydroxy-2,2-dimethylpropane→3,3-(2,2-Dimethyl-1,3-propylenedioxy)estra-5(10),9(11)-dien-17-one→3,3-(2,2-Dimethyl-1,3-propylenedioxy)-17beta,17beta-(methyleneoxy)estra-5(10),9(11)-diene→2-[3,3-(2,2-Dimethyl-1,3-propylenedioxy)-17beta-hydroxyestra-5(10),9(11)-dien-17-yl]acetonitrile
Intermediates available on this site
No listed intermediates for this target yet — send an RFQ directly and it will enter our matching pool.
This is a CAS-level registry record: registrations across routes are merged. Supplier offers and buyer demands will be matched on this CAS as the primary key.