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:
Nov. 09, 2021
Filed:
Jan. 20, 2016
Applicant:
Verrica Pharmaceuticals Inc., West Chester, PA (US);
Inventors:
Matthew Davidson, San Carlos, CA (US);
Garry Southan, Swampscott, MA (US);
Steven R. Schow, Redwood City, CA (US);
Robert Moore, Santa Rosa, CA (US);
Assignee:
Verrica Pharmaceuticals Inc., West Chester, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); C07D 493/18 (2006.01); G01N 21/33 (2006.01); A61K 31/365 (2006.01); G01N 30/74 (2006.01); G01N 33/15 (2006.01);
U.S. Cl.
CPC ...
C07D 493/18 (2013.01); A61K 31/365 (2013.01); G01N 21/33 (2013.01); G01N 30/74 (2013.01); G01N 33/15 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present disclosure provides methods for purifying a solution comprising cantharidin and cantharidin-associated impurities. A method to purify the solution can comprise recrystallization or sublimation, for example. The purified cantharidin can be analyzed using a detection method comprising a stationary phase and one or more mobile phases.