EP 3759081 A1 20210106 - AN IMPROVED PROCESS FOR THE PREPARATION OF PROPIOMAZINE MALEATE
Title (en)
AN IMPROVED PROCESS FOR THE PREPARATION OF PROPIOMAZINE MALEATE
Title (de)
VERBESSERTES VERFAHREN ZUR HERSTELLUNG VON PROPIOMAZINMALEAT
Title (fr)
PROCÉDÉ DE PRÉPARATION AMÉLIORÉ DE MALÉATE DE PROPIOMAZINE
Publication
Application
Priority
- IN 201841007386 A 20180227
- IN 2019050128 W 20190218
Abstract (en)
[origin: WO2019167058A1] The present invention relates to an improved process for the preparation of highly pure Propiomazine Maleate of formula-I. More particularly, the invention relates to a cost-effective process, which provides Propiomazine maleate of formula-I with high purity, which is free from isomeric impurity of formula-III, specifically isopropiomazine. The isomeric impurity is controlled during the preparation of Propiomazine maleate. (I)
IPC 8 full level
C07D 239/42 (2006.01)
CPC (source: EP)
C07C 51/412 (2013.01); C07D 279/28 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019167058 A1 20190906; EP 3759081 A1 20210106; EP 3759081 A4 20220105
DOCDB simple family (application)
IN 2019050128 W 20190218; EP 19760246 A 20190218