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:
Jun. 01, 2010
Filed:
Jun. 09, 2005
Girij Pal Singh, Pune, IN;
Himanshu Madhav Godbole, Pune, IN;
Umesh Babanrao Rananaware, Pune, IN;
Vilas Nathu Dhake, Pune, IN;
Suhas Ganpat Tambe, Pune, IN;
Sagar Purushottam Nehate, Pune, IN;
Girij Pal Singh, Pune, IN;
Himanshu Madhav Godbole, Pune, IN;
Umesh Babanrao Rananaware, Pune, IN;
Vilas Nathu Dhake, Pune, IN;
Suhas Ganpat Tambe, Pune, IN;
Sagar Purushottam Nehate, Pune, IN;
Lupin Limited, Mumbai, IN;
Abstract
A dicyclohexyamine salt of compound of formula I, namely perindopril, having an X-ray powder diffraction pattern with characteristic peaks (2θ): 8.462, 10.624, 18.693, 9.424, 17.272, 14.177, 19.499, 20.765, 21.409, and 14.540. A process for preparation of the said salt of perindopril and its use in the purification of an impure perindopril and a process for purification of perindropril comprising formation of its salt with dicyclohexylamine. The present invention also relates to preparation of Perindopril tert-butyl amine salt directly from Perindopril dicyclohexylamine salt without isolating the free base.