The influence of the shape and size of parent drug particles on their technological properties and the quality of ready-to-use
medicinal forms has been studied. A classification of powdered drugs with respect to the particle shape and size is described.
The necessity of determining these parameters for the correct standardization of parent substances is shown.
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 41, No. 1, pp. 41–49, January, 2007.