The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2024
Filed:
Dec. 07, 2021
Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, CN;
Wei Xiao, Lianyungang, CN;
Wei Zhang, Lianyungang, CN;
Yingguang Li, Lianyungang, CN;
Qingming Guo, Lianyungang, CN;
Shasha Gu, Lianyungang, CN;
Hanfei Hu, Lianyungang, CN;
Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang, CN;
Abstract
The present invention discloses a crystal form A of a compound, where the compound is S-(−)-2,3-methylenedioxy-5,8,13,13a-tetrahydro-10,11-dimethoxy-6H-dibenzo[a, g]quinolizine, and an X-ray powder diffraction pattern of the crystal form A includes three or more 2θ values selected from the group consisting of: 12.21±0.2°, 13.381±0.2°, 15.181±0.2°, 16.171±0.2°, 17.101±0.2°, 19.801±0.2°, 21.511±0.2°, 24.391±0.2°, and 25.321±0.2°. The crystal form A of the compound of the present invention does not contain water and a solvent, has high stability and low hygroscopicity, and is suitable for patent medicine.