research papers
The crystal structure of the metastable polymorph C of nifedipine [3,5-dimethyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate] was determined by means of ab initio direct-space methods applied to synchrotron powder diffraction data. Additionally, the crystallization kinetics and thermal stability of the nifedipine system were examined in-situ.