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:
May. 23, 2017
Filed:
Feb. 18, 2009
Dominique Meyer, La Rochelle, FR;
Claire Corot, Lyons, FR;
Marc Port, Deuil la Barre, FR;
Vincent Barbotin, Montmorency, FR;
Bruno Bonnemain, Villeparisis, FR;
Dominique Meyer, La Rochelle, FR;
Claire Corot, Lyons, FR;
Marc Port, Deuil la Barre, FR;
Vincent Barbotin, Montmorency, FR;
Bruno Bonnemain, Villeparisis, FR;
GUERBET, Villepinte, FR;
Abstract
The invention relates to a process for preparing a liquid pharmaceutical formulation containing a complex of macrocyclic chelate with a lanthanide and a mol/mol amount of free macrocyclic chelate of between 0.002% and 0.4%, advantageously between 0.02% and 0.3% and very advantageously between 0.025% and 0.25%, the macrocyclic chelate advantageously being chosen from DOTA, NOTA, DOTAGA, DO3A, BT-DO3A, HP-DO3A and PCTA, and is preferably DOTA, the said process comprising the following successive steps: b) preparation of a liquid pharmaceutical composition containing, firstly, the complex of macrocyclic chelate with a lanthanide, and, secondly, free macrocyclic chelate and/or free lanthanide; c) measurement in the pharmaceutical formulation obtained in step b) of the concentration of free macrocyclic chelate C ch1 and/or of free lanthanide C lan1; d) adjustment of C ch1 and/or of C lan1 so as to obtain C ch1=C tch1 and C lan1=0, wherein C t ch1 is the target concentration of free macrocyclic chelate in the final liquid pharmaceutical formulation.