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. 10, 2017
Filed:
Nov. 01, 2013
Applicant:
Hetero Research Foundation, Hyderabad, IN;
Inventors:
Bandi Parthasaradhi Reddy, Hyderbad, IN;
Kura Rathnakar Reddy, Hyderbad, IN;
Dasari Muralidhara Reddy, Hyderabad, IN;
Katham Srinivasa Reddy, Hyderabad, IN;
Bandi Vamsi Krishna, Hyderabad, IN;
Assignee:
Hetero Research Foundation, , IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 67/52 (2006.01); C07C 67/343 (2006.01); C07D 475/08 (2006.01);
U.S. Cl.
CPC ...
C07D 475/08 (2013.01); C07C 67/343 (2013.01); C07C 67/52 (2013.01);
Abstract
The present invention provides a novel process for the purification of alpha-propargylhomoterephthalic acid dimethyl ester substantially free of homoterephthalic acid dimethyl ester. The present invention also provides a novel process for the purification of pralatrexate.