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US3793323A Expired / Lapsed US ⏱️ 0.0 years remaining

Amino-substituted benzo(g)pteridine-di-n-oxides

Assignee: Bayer AG
•
Filing: 1971-07-07
•
Granted: 1974-02-19
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Expires: 1991-07-07
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Abstract

Abstract 4-AMINO - PYRIMIDO - (4,5,B) - QUINOXALINE - 5,10DIOXIDES OF THE FORMULA: 4-(R-NH-),5,10-DI(O=)BENZO(G)PTERIDINE WHEREIN R IS HYDROGEN, A STRAIGHT OR BRANCHED CHAIN SATURATED OR PARTIALLY UNSATURATED SUBSTITUTED OR UNSUBSTITUTED ALIPHATIC MOIETY OR A SUBSTITUTED OR UNSUBSTITUTED CYCLOALIPHATIC MOIETY, ARE PRODUCED BY REACTING QUINOXALINE-DI-N-OXISE OF THE FORMULA: 1,4-DI(O=),2-((CH3-)2-N-CH=N-),3-(NC-)QUINOXALINE WITH AN AMINE OF THE GENERAL FORMULA R-NH2, WHEREIN R IS AS DEFINED, ABOVE IN A DILUENT, AT A TEMPERATURE IN THE RANGE OF 20* TO 100* C. THESE COMPOUNDS ARE USEFUL FRO THEIR ANTIOMICROBIAL ACTIVITY. THEY EXHIBIT ACTIVITY AGAINST BOTH GRAM POSITIVE AND GRAM NEGATIVE BACTERIA.

Inventors

  • 👤 K Metzger
  • 👤 F Seng
  • 👤 K Ley

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 14:57
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/36; C07D241/50; C07D241/52; C07D475/00; C07D475/06

Claims Analysis

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-18 1977-08-20 1978-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-18 1981-08-20 1982-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-18 1985-08-20 1986-02-19 $7700.00 Window Closed / Lapsed

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