US3830827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
L-alpha-hydrazino-alpha-substituted-beta-(3,4-dihydroxyphenyl)propionic acid substantially free of the d isomer,the lower alkyl esters thereof,and the pharmaceutically acceptable salts thereof,wherein the substituent is lower alkyl
Assignee: Merck and Co Inc
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Filing: 1972-09-07
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Granted: 1974-08-20
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Expires: 1992-09-07
Abstract
Abstract A NOVEL COMPOUND IS USED TO INHIBIT MAMMALIAN DECARBOXYLASE, THE COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF L-A-HYDRAZINO-A-SUBSTITUTED -B- (3,4-DIHYDROXYPHENYL)PROPIONIC ACID SUBSTANTIALLY FREE OF THE D ISOMER, THE LOWER ALKYL ESTERS THEREOF, AND THE PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF, WHEREIN THE SUBSTITUENT IS LOWER ALKYL. COMPOUNDS, COMPOSITIONS AND METHOD OF TREATMENT ARE INCLUDED.
Inventors
- 👤 S Karady
- 👤 Sletzinger Meyer
- 👤 M Ly
- 👤 S Pines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:22
CPC Classifications
C; C07; C07C; C07C243/00
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |