The present invention relates to crystalline forms of mesaconine. Specifically, the present invention relates to crystalline form A, crystalline form B and crystalline form C of mesaconine and preparation methods thereof. In the method, the mesaconine is crystallized in solvent, and then the crude crystal is dried to obtain target crystalline form. The crystalline forms of mesaconine according to the present invention have good solubility, good stability, low hygroscopicity, long-term storage capability and good reproducibility, and have a good prospect to be developed as pharmaceuticals.
本发明涉及美沙
康宁的结晶形式。具体而言,本发明涉及
中乌头碱的结晶形式 A、结晶形式 B 和结晶形式 C 及其制备方法。在该方法中,中
乌头原碱在溶剂中结晶,然后将粗晶体干燥以获得目标晶型。本发明的美沙
康宁结晶具有良好的溶解性、稳定性、低吸湿性、长期储存性和良好的重现性,具有良好的医药开发前景。