Summary “n-ethyl-4-hydroxyl-1-methyl-5- (methyl (2,3,4,5,6-pentahydroxyhexyl) amino) -2-oxo-n-phenyl-1,2-dihydroquinoline-3 Carboxamide ”the present invention provides pharmaceutical compositions containing laquinimod or a pharmaceutically acceptable salt thereof, an isolated compound of n-ethyl-4-hydroxyl-1-methyl-5- (methyl (2,3,4,5,6-pentahydroxyhexyl ) amino) -2-oxo-n-phenyl-1,2-dihydroquinoline-3-carboxamide or its salts, compositions containing n-ethyl-4-hydroxyl-1-methyl-5- (methyl (2,3, 4,5,6-pentahydroxyhexyl) amino) -2-oxo-n-phenyl-1,2-dihydroquinoline-3-carboxamide and the methods for their preparation.resumo “n-etil-4-hidroxil-1-metil-5-(metil(2,3,4,5,6-pentahidroxihexil)amino)-2-oxo-n-fenil-1,2-dihidroquinolina-3-carboxamida” a presente invenção proporciona composições farmacêuticas que contêm laquinimod ou um seu sal farmaceuticamente aceitável, um composto isolado de n-etil-4-hidroxil-1-metil-5-(metil(2,3,4,5,6-pentahidroxihexil)amino)-2-oxo-n-fenil-1,2-dihidroquinolina-3-carboxamida ou um dos seus sais, composições contendo n-etil-4-hidroxil-1-metil-5-(metil(2,3,4,5,6-pentahidroxihexil)amino)-2-oxo-n-fenil-1,2-dihidroquinolina-3-carboxamida e os métodos de preparação dos mesmos.
