C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 405/12 (2006.01) C07D 405/14 (2006.01)
Patent
CA 2219613
The invention refers to a crystalline form of the doxazosin mesylate and to a process for its production by hot treating with methanesulfonic acid doxazosin suspended in a solvent selected from the alcohols, straight or branched, from C1 to C6, the esters of the aliphatic carboxylic acids from C1 to C8 with the alcohols, straight or branched, from C1 to C8, the aliphatic ketones from C3 to C8 and mixtures thereof.
L'invention porte sur une forme cristallisée de mésylate de doxazosine et sur une méthode pour la préparer par traitement thermique de la doxazosine avec de l'acide méthanesulfonique dans un solvant choisi parmi les alcools, à chaîne droite ou ramifiée, de C1 à C6, les esters d'acides carboxyliques aliphatiques de C1 à C8 avec des alcools à chaîne droite ou ramifiée, de C1 à C8, les cétones aliphatiques de C3 à C8, et leurs mélanges.
Cannata Vincenzo
Carrara Cristina
Piani Silvano
Saguatti Stefano
Alfa Chemicals Italiana S.r.l.
Marks & Clerk
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