US3846413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New imines, their preparation and their pharmaceutical use
Assignee: Bayer AG
•
Filing: 1973-05-11
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Granted: 1974-11-05
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Expires: 1993-05-11
Abstract
Abstract Imines of 2-formylquinoxaline-3-carboxylic acid-1,4-dioxides and their salts are obtained through treatment of the lactone or a salt of 2-dihydroxymethylquinoxaline-N,N-dioxide-3-carboxylic acid with a reactant bearing a free primary amino group. The resultant compounds and their non-toxic salts are antibacterial agents and can be incorporated in pharmaceutical compositions and feedstuffs for this use. A typical embodiment is 2(carbomethoxyhydrazonomethyl)-quinoxaline-3-carboxylic acid-1,4dioxide.
Inventors
- 👤 F Seng
- 👤 K Ley
- 👤 K Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:49
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/08; C07D277/12; C07D277/18; A; A23; A23K; A23K20/00; A23K20/10; A23K20/116; A23K20/137; C07D241/00; C07D241/36; C07D241/50; C07D241/52; C07D401/00; C07D401/02; C07D401/12; C07D491/00; C07D491/02; C07D491/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
10 words
A compound according to claim 1 whErein Y is hydrogen.
Claim 4
Dependent Claim
14 words
A compound according to claim 1 wherein Y is a sodium or potassium cation.
Claim 5
Dependent Claim
8 words
The compound according to claim 1 which is
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |