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. 02, 2025
Filed:
Mar. 01, 2021
Applicant:
Indena S.p.a., Milan, IT;
Inventors:
Assignee:
INDENA S.P.A., Milan, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 498/22 (2006.01);
U.S. Cl.
CPC ...
C07D 498/22 (2013.01);
Abstract
Disclosed is a process for the purification of staurosporine (1), which comprises salification of staurosporine (1) (Formula (1)) by treatment with a mineral acid to give a precipitated salt, isolation of the staurosporine (1) precipitated salt, treatment of the staurosporine (1) isolated salt with an organic base, and isolation of staurosporine (1). Also disclosed are novel polymorphic forms of the mono- and bis-hydrochloride salts of staurosporine (1).