US3625970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(disubstituted phenyl or benzyl)-1h-indazol-3-yloxyacetic acid
Assignee: Bayer Corp
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Filing: 1968-04-17
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Granted: 1971-12-07
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Expires: 1988-04-17
Abstract
Abstract Chemical compounds in which the hydroxyl hydrogen atom of a 1(disubstituted phenyl or benzyl)-1H-indazol-3-ol is replaced by a carboxymethyl moiety to yield 1-(disubstituted phenyl or benzyl)1H-indazol-3-yloxyacetic acids are described. The compounds can be prepared by forming the alkali metal salt of the indazol-3-o1 and effecting a Williamson Ether Synthesis reaction with a carboxymethyl halide. The compounds possess anti-inflammatory activity as demonstrated by the Limb Volume Test procedure.
Inventors
- 👤 Laszlo Ambrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:46
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/54; C07D231/56; C07C; C07C247/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
9 words
A compound of claim 1 wherein n is 0.
Claim 2
Dependent Claim
9 words
A compound of claim 1 wherein n is 1.
Claim 3
Dependent Claim
7 words
A compound of claim 1, (1-(3,5-bis(trifluoromethy)phenyl)-1H-indazol-3-yloxy)-acetic acid.
Claim 4
Dependent Claim
7 words
A compound of claim 1, (1-(2-chloro-5-trifluoromethylphenyl)-1H-indazol-3-yloxy)-acetic acid.
Claim 5
Dependent Claim
7 words
A compound of claim 1, (1-(3,5-bis-trifluoromethyl)-benzyl)-1H-indazol-3-yloxy)-acetic acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |