A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 9/14 (2006.01) C07J 41/00 (2006.01)
Patent
CA 2479991
Disclosed is a method for producing crystals, the average particle size of which lies within a predefined range while the maximum particle size does not exceed a given value. According to the inventive method, an oversaturated solution of special 11.szlig.-benzaldoxime-estra-4,9-diene is subjected to wet milling during crystallization by means of a wet milling device, whereby a primary granular suspension is obtained. Also disclosed are crystals that are obtained by the inventive method and pharmaceutical formulations containing said crystals.
L'invention concerne un procédé pour produire des cristaux, dont la taille moyenne de particules se situe dans une plage prédéterminée et dont la taille maximale de particules ne dépasse pas une valeur prédéfinie. Pendant la cristallisation, une solution sursaturée de 11.szlig.-benzaldoxime-estra-4,9-diène spécial est soumise à un broyage par voie humide au moyen d'un dispositif prévu à cet effet, cette opération permettant d'obtenir une suspension de particules primaires. L'invention concerne en outre des cristaux obtenus selon ledit procédé ainsi que des formulations pharmaceutiques les contenant.
Eichardt Annette
Gerecke Hagen
Gliesing Sabine
Grawe Detlef
Hosel Peter
Fetherstonhaugh & Co.
Schering Aktiengesellschaft
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