申请人:LUPIN LIMITED
公开号:US20180193292A1
公开(公告)日:2018-07-12
The present invention provides process for preparation of cysteamine bitartrate comprising reacting cysteamine or its salt with tartaric acid. The present invention further provides crystalline form L1 of cysteamine bitartrate having characteristic diffraction peaks at 10.36, 14.54, 17.23, 18.03, 19.24, 20.76, 21.20, 22.02, 23.37, 23.64, 27.71, 28.28, 29.26, 31.33, 32.84, 33.83, 35.51, 36.74±0.2 degree two theta in an X-ray diffraction pattern and process for preparation thereof. The present invention provides crystalline form L2 of cysteamine bitartrate having characteristic diffraction peaks at 7.4, 10.3, 11.0, 11.4, 14.4, 14.9, 18.6, 19.4, 20.1, 20.8, 21.9, 22.3, 22.5, 23.5±0.2 degree two theta in an X-ray diffraction pattern and process for preparation thereof.
本发明提供一种制备
硫醇双
酒石酸盐的方法,包括将
硫醇或其盐与
酒石酸反应。本发明还提供
硫醇双
酒石酸盐的结晶形态L1,其在X射线衍射图谱中具有特征衍射峰,分别为10.36、14.54、17.23、18.03、19.24、20.76、21.20、22.02、23.37、23.64、27.71、28.28、29.26、31.33、32.84、33.83、35.51、36.74±0.2度二θ,并提供其制备方法。本发明还提供
硫醇双
酒石酸盐的结晶形态
L2,其在X射线衍射图谱中具有特征衍射峰,分别为7.4、10.3、11.0、11.4、14.4、14.9、18.6、19.4、20.1、20.8、21.9、22.3、22.5、23.5±0.2度二θ,并提供其制备方法。