The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 1980
Filed:
Feb. 28, 1979
Applicant:
Inventors:
Assignee:
Archifar Laboratori Chimico Farmacologici S.p.A., Milan, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ;
Abstract
3-nitro-rifamycins S and SV useful as starting compounds for the production of antibiotic substances. Such compounds are obtained by reaction of a 3-bromo-rifamycin S with sodium nitrite in a dipolar aprotic solvent at a temperature from room temperature to +40.degree. C.