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. 16, 2021
Filed:
Oct. 08, 2019
Applicants:
Shanghai Haiyan Pharmaceutical Technology Co., Ltd., Shanghai, CN;
Yangtze River Pharmaceutical Group Co., Ltd., Jiangsu, CN;
Inventors:
Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 241/04 (2006.01);
U.S. Cl.
CPC ...
C07D 241/04 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present disclosure discloses sodium ion channel inhibitors, pharmaceutically acceptable salts and polymorphs thereof, and uses thereof. Specifically, the present disclosure discloses a polymorph of a compound of formula (X) and a preparation method thereof. The preparation method of the present disclosure is simple in operation and suitable for industrialization. The polymorph prepared by the preparation method has advantages of good stability, low hygroscopicity and high water solubility.