New crystal form of minodronic acid

摘要

The present invention provides two stable crystalline forms of (1-Hydroxy-2-imidazo[1,2-a]pyridin-3-yl-1-phosphonoethyl) phosphonic acid, designated crystal form X and form Y, as well as methods for their preparation, by which each crystalline polymorph can be individually obtained as a single crystal form.