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. 23, 2021
Filed:
Apr. 18, 2018
Applicant:
Beijing Union Pharmaceutical Factory, Beijing, CN;
Inventor:
Bo Song, Beijing, CN;
Assignee:
BEIJING UNION PHARMACEUTICAL FACTORY, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61P 25/00 (2006.01); C07D 307/00 (2006.01); A61K 47/32 (2006.01);
U.S. Cl.
CPC ...
C07D 307/00 (2013.01); A61K 47/32 (2013.01);
Abstract
A method suitable for large-scale production of buagafuran active pharmaceutical ingredient. A buagafuran active pharmaceutical ingredient (API) with a high purity prepared by the method includes an active ingredient of buagafuran, an impurity A, and an impurity B. In the buagafuran API, a content of the active ingredient of buagafuran is higher than 97.5%, and a total content of the impurity A and the impurity B is less than 0.04%. The buagafuran API can be applied to new drug development processes such as clinical research, pharmaceutical research and quality control research.