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:
Jul. 07, 2020
Filed:
Dec. 13, 2017
Applicant:
Crystal Pharmaceutical (Suzhou) Co., Ltd., Suzhou, Jiangsu, CN;
Inventors:
Minhua Chen, Suzhou, CN;
Yanfeng Zhang, Suzhou, CN;
Po Zou, Suzhou, CN;
Jinqiu Wang, Suzhou, CN;
Xiaoyu Zhang, Suzhou, CN;
Assignee:
Crystal Pharmaceutical (Suzhou) Co., Ltd., Suzhou, CN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 213/81 (2006.01);
U.S. Cl.
CPC ...
C07D 213/81 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present disclosure relates to novel crystalline forms of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid and processes for preparation and uses thereof. Crystalline form CS1, form CS2 and form CS8 of the present disclosure can be used for preparing drugs treating anemia, which providing new choices for preparing drugs of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid, and having very important value for drug development.