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:
Feb. 05, 2019
Filed:
Feb. 01, 2016
Applicant:
Crystal Pharmatech Co., Ltd., Suzhou, Jiangsu, CN;
Inventors:
Minhua Chen, Jiangsu, CN;
Yanfeng Zhang, Suzhou, CN;
Xiaojuan Diao, Suzhou, CN;
Nan Xia, Suzhou, CN;
Xiaoyu Zhang, Suzhou, CN;
Assignee:
Crystal Pharmatech Co., Ltd, Suzhou, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 473/34 (2006.01); C07D 473/30 (2006.01); A61K 31/52 (2006.01);
U.S. Cl.
CPC ...
C07D 473/34 (2013.01); A61K 31/52 (2013.01); C07D 473/30 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present disclosure relates to crystalline Form α of a compound of formula (I) used for preparing a blood-cancer drug and preparation method thereof. The crystalline Form α in the present disclosure has better stability, and its solubility and hygroscopicity meet the requirements of medical use. Form α has simple preparation method and low manufacturing cost, and provides great value to future optimization and development of this drug.