US4014934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 4'-hydroxyphenyl guanidines and methods of using the same
Assignee: Armour Pharmaceutical Co
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Filing: 1974-10-29
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Granted: 1977-03-29
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Expires: 1994-10-29
Abstract
Abstract Novel aromatic guanidine compounds having the formula: ##STR1## wherein: R 1 is hydroxyl, methyl or hydroxymethyl and R 2 is hydrogen or methyl, are found to have biological activity. The guanidine compounds and their salts are shown to be active as vasoconstrictor agents and create useful pharmaceutical preparations when deployed with a pharmaceutically acceptable carrier for administration to a host, e.g., man, requiring vasoconstrictive therapy.
Inventors
- 👤 John Lawrence Hughes
- 👤 Robert Chung-Huan Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:43
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/16; A61K31/18; A61K31/13; A61K31/155; A61K31/33; A61K31/395; A61K31/435; A61K31/47
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
19 words
Aromatic guanidine compounds having the formula ##STR3## wherein: R 1 is hydroxyl; and R 2 is hydrogen or methyl.
Claim 2
Dependent Claim
19 words
Aromatic guanidine compounds having the formula ##STR3## wherein: R 1 is hydroxyl; and R 2 is hydrogen or methyl.
Claim 3
Dependent Claim
9 words
A compound according to claim 1 denominated 3',4'-dihydroxyphenyl guanidine.
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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |