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:
Oct. 18, 1977
Filed:
Sep. 05, 1975
Applicant:
Inventor:
George Francis Field, West Caldwell, NJ (US);
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548303 ; 2603 / ; 2604 / ; 2605 / ; 2605 / ; 560 12 ; 560 13 ; 560 16 ; 560153 ; 560156 ;
Abstract
This invention relates to a synthesis of biotin by the reduction of dehydrobiotin. The dehydrobiotin is prepared from 6-hydroxy-7-nitro-heptanoic acid methyl ester. Novel intermediates are also obtained by this synthesis.