C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 211/58 (2006.01) B01D 15/08 (2006.01)
Patent
CA 2544195
There is described a process for the purification of an impure preparation containing fentanyl by means of a reverse phase preparative chromatography process. A chromatographic column is loaded with a stationary phase, typically a silica particle having an organic ligand bound thereto. With a loading ratio of from about 50 to about 150 the impure preparation is acidified and passed through the column. The column is eluted with typically an aqueous solution of acetonitrile and the purified fentanyl is obtained in a specified cut.
L'invention concerne un procédé pour purifier une préparation impure contenant du fentanyle par chromatographie préparative à phase inverse. Selon l'invention, une colonie chromatographique est chargée d'une phase stationnaire, de manière typique de particules de silicium ayant un lien de ligand organique. Avec un taux de charge allant d'environ 50 à environ 150, la préparation impure est acidifiée et traverse la colonne. L'élution de la colonne est réalisée au moyen d'une solution aqueuse d'acétonitrile et le fentanyle purifié est obtenu dans un fractionnement spécifique.
Mallinckrodt Inc.
Osler Hoskin & Harcourt Llp
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