C - Chemistry – Metallurgy – 07 – J
Patent
C - Chemistry, Metallurgy
07
J
C07J 5/00 (2006.01) A61K 31/57 (2006.01) A61K 47/48 (2006.01)
Patent
CA 2196171
Described is a process for preparing beclomethasone dipropionate Freon clathrate comprising the use of an agent which selectively binds methanol to selectively remove methanol from a mixture of methanol and Freon 11 containing beclomethasone dipropionate.
L'invention concerne un procédé de préparation de clathrate de Fréon? de dipropionate de béclométhasone consistant à utiliser un agent de liaison sélective avec le méthanol, afin de supprimer sélectivement le méthanol d'un mélange de méthanol et de Fréon? 11 contenant du dipropionate de béclométhasone.
Love George M.
Rosenhouse Stanley
Ogilvy Renault
Schering Corporation
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