US3663584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di-(6-methoxy-2-naphthyl)zinc and 6-methoxy-2-naphthylzinc halide
Assignee: Roche Palo Alto LLC
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Filing: 1970-12-04
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Granted: 1972-05-16
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Expires: 1990-12-04
Abstract
Abstract 2-(6-METHOXY-2-NAPHTYL) PROPIONIC ACID IS PREPARED BY REACTING DI(6-METHOXY-2-NAPHTHYL)ZINC OR 6-METHOXY-2NAPHTHYLZINC HALIDE WITH A LOWER ALKYL 2-HALOPROPIONATE IN A SUITABLE SOLVENT TO FORM A LOWER ALKYL 2-(6-METHOXY2-NAPHTHYL)PROPIONATE AND HYDROLYZING THE ESTER GROUP THEREOF. THE PRODUCT HAS ANTI-INFALMMATORY, ANALGESIC AND ANTI-PYRETIC ACTIVITIES.
Inventors
- 👤 Francisco Alvarez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:52
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02; C07F3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |