Patent ID: 11872234
Assignee: PAR PHARMACEUTICAL, INC.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 0:
1. A pharmaceutical composition in the form of a tablet, comprising varenicline tartrate and means for reducing the levels of N-formyl varenicline impurity to less than about 0.15% (w/w) as measured by RS-Method II, diamide impurity to less than about (w/w) as measured by RS-Method II, N-methyl varenicline impurity to less than about (w/w) as measured by RS-Method III, varenicline-N glucoside impurity to less than about (w/w) as measured by RS-Method III, tartaric acid monomethyl ester impurity to less than about 0.15% (w/w) as measured by LCMS-ESI, and tartaric acid dimethyl ester impurity to less than about 0.15% (w/w) as measured by LCMS-APCI.