US3790554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heptapeptide intermediate to gonadotropin-releasing hormone
Assignee: Abbott Laboratories
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Filing: 1971-09-24
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Granted: 1974-02-05
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Expires: 1991-09-24
Abstract
Abstract THE SYNTHESIS OF THE HEPTAPEPTIDE SER-TYR-CLY-LEUARG-PRO-GLY-AMIDE CARRYING EASILY REMOVABLE PROTECTIVE GROUPS ON THE SER, TYR AND ARG MOIETIES IS DESCRIBED; THE CORRESPONDINGLY PROTECTED HEXAPEPTIDE IS USED AS THE STATING MATERIAL. THE HEPTAPEPTIDE, UPON REMOVAL OF ANY PROTECTIVE GROUP ON THE AMINO-N OF THE SERINE MOIETY, IS AN IMPORTANT INTERMEDIATE FOR THE PEPARATION OF THE GONADOTROPIN-RELEASING HORMONE.
Inventors
- 👤 G Flouret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:24
CPC Classifications
C; C07; C07K; C07K7/00; C07K7/04; C07K7/23; Y; Y10; Y10S; Y10S930/00; Y10S930/01; Y10S930/13
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |