Method of crystallization of bicalutamide

Details Method of crystallization of bicalutamide Method of crystallization of bicalutamide

C - Chemistry, Metallurgy

07

C

C07C 315/06 (2006.01) C07C 317/46 (2006.01)

Patent

CA 2573326

A method of crystallizing bicalutamide, comprising adding an acetone solution containing bicalutamide to water. There is provided a crystal of bicalutamide obtained by the above method and having a particle size distribution of Dp10=1 to 10 ~m, Dp50=10 to 25 ~m and Dp90=25 to 100 ~m. Further, there is provided a crystal of bicalutamide having a particle size distribution of Dp10=1 to 3 ~m, Dp50=2 to 5 ~m and Dp90=5 to 15 ~m.

Cette invention décrit une méthode pour la cristallisation du bicalutamide, qui consiste à ajouter une solution d~acétone contenant du bicalutamide dans de l~eau. Cette invention décrit en outre un cristal de bicalutamide obtenu par la méthode susmentionnée et présentant une répartition granulométrique de Dp10=1 to 10 µm, Dp50=10 à 25 µm et Dp90=25 to 100 µm. L~on y trouve encore un cristal de bicalutamide présentant une répartition granulométrique de Dp10=1 to 3 µm, Dp50=2 to 5 µm et Dp90=5 to 15 µm.

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