Levalbuterol hydrochloride polymorph a

Details Levalbuterol hydrochloride polymorph a Levalbuterol hydrochloride polymorph a

C - Chemistry, Metallurgy

07

C

C07C 215/60 (2006.01) A61K 31/135 (2006.01) A61P 11/00 (2006.01)

Patent

CA 2556920

The invention is directed to processes for making levalbuterol HC1 Polymorph A from by suspending or forming a first slurry of (R)-SLB(D)-DBTA in at least a first organic solvent, adding HC1 to the suspension or slurry of the solid (R)- SLB.D-DBTA until the (R)-SLB.D-DBTA forms levalbuterol HC1 Polymorph A, and isolating the levalbuterol HC1 Polymorph A.

L'invention concerne des procédés pour fabriquer un polymorphe A de HCl de levalbuterol à partir de la suspension ou de la formation d'une première boue de (R)-SLB(D)-DBTA dans au moins un premier solvant organique. Ces procédés consistent à: ajouter le HCl à la suspension ou à la boue de (R)-SLB-D-DBTA solide jusqu'à ce que le (R)-SLB-D-DBTA forme un polymorphe A de HCl de levalbuterol; et isoler ce polymorphe de HCl de levalbuterol.

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