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:
Mar. 12, 2019
Filed:
May. 25, 2016
Applicant:
Mallinckrodt Llc, Hazelwood, MO (US);
Inventors:
George Helmut Klemm, Hazelwood, MO (US);
Brian Orr, Hazelwood, MO (US);
Joel McClenaghan, Hazelwood, MO (US);
Assignee:
SpecGX LLC, Webster Groves, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 409/06 (2006.01); C07C 51/41 (2006.01);
U.S. Cl.
CPC ...
C07D 409/06 (2013.01); C07C 51/412 (2013.01);
Abstract
Provided herein are processes for forming sufentanil citrate from sufentanil base. One process comprises forming sufentanil citrate in the presence of a polar non-aqueous solvent. Other processes comprise forming sufentanil citrate in the presence of water.