abstract |
The invention relates to a crystal form II of (S)-alpha, alpha-[(2-chlorphenyl)-(4,5,6,7-tetrahydrothieno [3,2-c] pyridine-5-yl)]-N'-(dimethyl) methylene) acethydrazide and a preparation method, and also relates to a medicinal composition prepared by the new crystal form II and application. The crystal form II is characterized by a powder X-ray diffraction pattern and melting point data of the crystal form II. |