← Back to patent-cliff list
CAS 858972-16-4
Ethyl (4-fluoro-3-nitrophenyl)acetate
Codes：(XVII)819703-1-b
Application context (from source-drug indications)
胃肠道间质瘤瑞派替尼
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| 瑞派替尼Ripretinib | Tier C — Watch / trade | 2032 |
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.
Ethyl (5-amino-2-bromo-4-fluorophenyl)acetate→3-(5-Amino-2-bromo-4-fluorophenyl)-1-ethyl-7-(methylamino)-1,6-naphthyridin-2(1H)-one hydrochloride→Carbanilic acid phenyl ester→(4-Fluoro-3-nitrophenyl)acetic acid→Ethyl (4-fluoro-3-nitrophenyl)acetate→Ethyl (3-amino-4-fluorophenyl)acetate
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.