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. 05, 1980
Filed:
Feb. 12, 1979
Applicant:
Inventors:
Richard F Shuman, Westfield, NJ (US);
Roger J Tull, Metuchen, NJ (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544277 ;
Abstract
Adenine is prepared by heating hydrogen chloride and hydrogen cyanide in a mixture of phosphorus oxychloride and dichlorophosphoric acid as solvent in a sealed vessel or by heating N-dichloromethylformamidine hydrochloride or triazine hydrochloride in a mixture of phosphorus oxychloride and dichlorophorphoric acid.