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. 29, 2026
Filed:
Aug. 29, 2023
Applicant:
Xwpharma Ltd., Grand Cayman, KY;
Inventors:
Jia-Ning Xiang, Fremont, CA (US);
Xuesong Xu, Fremont, CA (US);
Xuan Zhang, Fremont, CA (US);
James Tien, Taoyuan, TW;
Hao-Wei Shih, New Taipei City, TW;
Hsin-Yi Huang, New Taipei City, TW;
Assignee:
XWPharma Ltd., Grand Cayman, KY;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 229/24 (2006.01); A61K 9/16 (2006.01); A61K 31/221 (2006.01);
U.S. Cl.
CPC ...
C07C 229/24 (2013.01); A61K 9/16 (2013.01); A61K 31/221 (2013.01); C07B 2200/13 (2013.01);
Abstract
Crystalline 4-((L-valyl)oxy)butanoic acid, methods of preparing crystalline 4-((L-valyl)oxy)butanoic acid, pharmaceutical compositions of crystalline 4-((L-valyl)oxy)butanoic acid, and methods of treatment using crystalline 4-((L-valyl)oxy)butanoic acid are disclosed.