FIELD: pharmaceuticals.
SUBSTANCE: invention relates to particles N-(5-cyano-4-((2-methoxyethyl)amino)pyridin-2-yl)-7-formyl-6-((4-methyl-2-oxopiperazin-1-yl))methyl)-3,4-dihydro-1,8-naphthyridin-1(2H)-carboxamide, a method of producing said particles, pharmaceutical compositions containing said particles, and use of particles to produce a pharmaceutical composition.
EFFECT: obtaining novel particles having a median size of x50 from 10 to 20 mcm, where the primary particles are optionally crystalline primary particles having the shape of columnar crystals, and have improved rheological properties.
12 cl, 11 dwg, 7 ex
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