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:
Dec. 30, 2025
Filed:
Apr. 12, 2021
Applicant:
Eisai R&d Management Co., Ltd., Tokyo, JP;
Inventor:
Masashi Bando, Kakamigahara, JP;
Assignee:
Eisai R&D Management Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 47/02 (2006.01); A61K 9/16 (2006.01); A61K 9/48 (2006.01); A61K 31/47 (2006.01); C07D 215/48 (2006.01);
U.S. Cl.
CPC ...
A61K 47/02 (2013.01); A61K 9/1611 (2013.01); A61K 9/1652 (2013.01); A61K 9/485 (2013.01); A61K 9/4866 (2013.01); A61K 31/47 (2013.01); C07D 215/48 (2013.01);
Abstract
A pharmaceutical composition comprising a compound represented by the formula (I) or pharmaceutically acceptable salt thereof or solvate thereof; and a basic substance is excellent in dissolution, is stable even after a long term storage, and is useful as a preventive or therapeutic agent against a tumor: wherein, Ris a hydrogen atom, a Calkyl group or a Ccycloalkyl group; and Ris a hydrogen atom or a methoxy group.