The present Invention relates to a 10 tosylate Salt of N - [3 - [(4aR, 7aS) - 2 - amino - 4 - (5 - fluoropirimidin - 2 - il) - 4,4a 5.7 - tetrahidropirrolo [3,4-d] [1.3] tiazin - 7a - yl] - 4 - 5 - fluoro - methoxy phenyl] pyrazine-2-carboxamideLA PRESENTE INVENCIÓN SE REFIERE A UNA 10 SAL DE TOSILATO DE N-[3-[(4AR,7AS)-2-AMINO-6-(5-FLUOROPIRIMIDIN-2-IL)-4,4A,5,7-TETRAHIDROPIRROLO[3,4-D][1,3]TIAZIN-7A-IL]-4-FLUORO-FENIL]-5-METOXI-PIRAZINA-2-CARBOXAMIDA