Compound Methyl {4,6-diamino-2 - [1 - (2-fluorobenzyl) - 1H - pirazoiolo - [3,4-b] piridino -3 -] 5 - pirimidino - Il Il} methylcarbamate served in the form of modification modification I, II, solvate mono - DMSO DMSO, solvate sesqui solvate, 1 / 4 - ethyl acetate, in the Amorphous form or a mixture thereof; and a Pharmaceutical composition.<;p>;COMPUESTO METIL{4,6-DIAMINO-2-[1-(2-FLUOROBENCIL)-1H-PIRAZOIOLO-[3,4-B]PIRIDINO- 3-IL]PIRIMIDINO-5-IL}METILCARBAMATO QUE SIRVE EN LA FORMA CRISTALINA I, FORMA CRISTALINA II, SOLVATO DE MONO-DMSO, SOLVATO DE SESQUI-DMSO, SOLVATO DE 1/4-ACETATO DE ETILO, EN LA FORMA AMORFA O UNA MEZCLA DE LOS MISMOS; Y COMPOSICION FARMACEUTICA.<;/p>;