C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 211/90 (2006.01)
Patent
CA 2622683
Processes for the purification of lercanidipine hydrochloride are provided which uses a binary system of an alcohol-containing solvent such as methanol and an aliphatic ester-containing solvent such as isopropyl acetate. Processes for the preparation of substantially amorphous lercanidipine hydrochloride are also provided. Also provided is lercanidipine hydrochloride substantially in polymorph form V.
L'invention concerne des procédés de purification de l'hydrochlorure de lercanidipine utilisant un système binaire constitué d'un solvant contenant de l'alcool tel que du méthanol, et d'un solvant contenant un ester aliphatique tel que de l'acétate d'isopropyle. L'invention concerne également les procédés de préparation de l'hydrochlorure de lercanidipine sensiblement amorphe. L'invention concerne enfin l'hydrochlorure de lercanidipine sensiblement dans la forme polymorphe V.
Ahmed Khan Mubeen
Biswas Maloyesh Mathuresh
Pradhan Nitin Sharad Chandra
Sawant Mangesh Shivram
Sinha Sukumar
Glenmark Pharmaceuticals Limited
Sim & Mcburney
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