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:
Sep. 30, 2025
Filed:
Mar. 02, 2021
Applicant:
Guangzhou Maxinovel Pharmaceuticals Co., Ltd., Guangdong, CN;
Inventors:
Assignee:
GUANGZHOU MAXINOVEL PHARMACEUTICALS CO., LTD., Guangdong, CN;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 229/22 (2006.01); C07C 227/42 (2006.01);
U.S. Cl.
CPC ...
C07C 229/22 (2013.01); C07C 227/42 (2013.01); C07B 2200/13 (2013.01);
Abstract
Disclosed in the present invention are a crystal form of aromatic vinyl derivatives, and a preparation method therefor and the use thereof. Specifically disclosed in the present invention are crystal form A, crystal form B and crystal form C of a compound as shown in formula I. The crystal forms of the present invention have a good stability, are less hygroscopic and are easy to prepare, and have an important value in terms of the optimization and development of drugs.