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:
Aug. 02, 2011
Filed:
Dec. 15, 2005
Applicants:
Roberto Giovanetti, Schio, IT;
Andrea Nicoli, Vicenza, IT;
Livius Cotarca, Friuli, IT;
Inventors:
Assignee:
ZaCh System S.p.A., Bresso, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 227/40 (2006.01); C07C 229/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for the purification of gabapentin. The process relates to the addition of hydrochloric acid to an aqueous solution or suspension of gabapentin, before, during or after the concentration step of that solution, and the subsequent slurry of the gabapentin by the addition of an alcoholic solvent. The so obtained gabapentin has an high purity degree and, in particular, is characterized by a low content of lactam.