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:
Oct. 02, 2018
Filed:
Feb. 03, 2016
Applicant:
Chongqing Pharmaceutical Research Institute Co., Ltd, Chongqing, CN;
Inventors:
Naiguo Xing, Chongqing, CN;
Yan Shangguan, Chongqing, CN;
Deping Zheng, Chongqing, CN;
Fanglu Chen, Chongqing, CN;
Assignee:
CHONGQING PHARMACEUTICAL RESEARCH INSTITUTE CO., LTD, Chongqing, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07J 43/00 (2006.01);
U.S. Cl.
CPC ...
C07J 43/003 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present invention relates to the field of pharmaceutical chemistry, and particularly to a crystal form of Abiraterone propionate and a preparation method therefor. Characteristic diffraction peaks occur at positions, where the 2θ value is 5.7°, 11.9°, 12.4°, 14.9°, 15.8°, 16.7°, 18.5°, 19.1°, 21.7°, 22.4°, and 39.9°±0.2°, in an X-ray powder diffraction spectrum of the crystal form of Abiraterone propionate.