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:
Jan. 14, 2025
Filed:
Feb. 28, 2020
Applicant:
Cspc Zhongqi Pharmaceutical Technology (Shijiazhuang) Co., Ltd., Hebei, CN;
Inventors:
Zhankun Yang, Hebei, CN;
Hanyu Yang, Hebei, CN;
Pengfei Li, Hebei, CN;
Xiaopeng Liu, Hebei, CN;
Caihong Zhou, Hebei, CN;
Junling Wang, Hebei, CN;
Chunna Li, Hebei, CN;
Xibao Liu, Hebei, CN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 487/04 (2006.01);
U.S. Cl.
CPC ...
C07D 487/04 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present invention sets forth a salt of an aldose reductase inhibitor shown in formula A-N. The salt being able to be prepared as a crystal form, having notably improved solubility relative to the compound of formula A, having lower hygroscopicity allowing for stable existence, and thus being more easily made into a medicine than are the formula A compound or other salts.