A method for preparing polymorph of succinate salt of 2-[6-(3-amino-piperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydro-2h-pyrimidin-1-ylmethyl]-4-fluoro-benzonitrile

Abstract

Disclosed is a novel method for preparing polymorph of succinate salt of 2-[6- (3-Am ino-piperidin-l-y1)-3-methyl-2, 4-dioxo-3, 4-dihydro-2H-pyrimidin-l-ylmethyl]-4- fluoro-benzonitrile (referred to herein as Compound I) which has the formula: wherein the Compound I is present in one or more polymorphic form.