The present invention relates to n- (5-cyano-4 - ((2-methoxyethyl) amino) pyridin-2-yl) -7-formyl-6 - ((4-methyl-2-oxopiperazin-1) particles -yl) methyl) -3,4-dihydro-1,8-naphthyridine-1 (2h) -carboxamide, to a process of preparing said particles, to pharmaceutical compositions comprising said particles and to the method of treating cancers using said pharmaceutical compositions.a presente invenção refere-se a partículas de n-(5-ciano-4-((2-metoxietil)amino)piridin-2-il)-7-formil-6-((4-metil-2-oxopiperazin-1-il) metil)-3,4-di-hidro-1,8-naftiridina-1(2h)-carboxamida, a um processo de preparar as referidas partículas, a composições farmacêuticas compreendendo as referidas partículas e a método de tratar cânceres usando as referidas composições farmacêuticas.
