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:
Mar. 08, 2016
Filed:
Jan. 10, 2013
Applicant:
Shanghai Techwell Biopharmaceutical Co., Ltd., Shanghai, CN;
Inventors:
Zhijun Tang, Shanghai, CN;
Yubin Liu, Shanghai, CN;
Bingming He, Shanghai, CN;
Jun Yang, Shanghai, CN;
Xiaoming Ji, Shanghai, CN;
Assignee:
Shanghai Techwell Biopharmaceutical Co., Ltd., Shanghai, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 59/72 (2006.01); C07C 51/43 (2006.01);
U.S. Cl.
CPC ...
C07C 59/72 (2013.01); C07C 51/43 (2013.01); C07C 2103/14 (2013.01);
Abstract
Provided are a crystal form A of a compound having the structure as represented by formula I, and preparation method and use thereof. The X-ray powder diffraction (XRPD) chart of the crystal form A has characteristic peaks at the following diffraction angles: 2.9±0.2°, 13.6±0.2°, 17.3±0.2° and 18.6±0.2°.