For the compound 3 - (2,6 - Dichloro - 3,5 - dimethoxy phenyl) - 1 - (6 - [4 - (ethyl - piperazin-1-yl) - phenylamino] - piridimin - il - 4} - 1 - Methyl urea and 1 - (2,6 - Dichloro - 3,5 - Dimethoxy - phenyl) - 3 - (6 - [4 - (ethyl - piperazin-1-yl) - phenylamino] pyrimidin-4-yl) - urea or a pharmaceutically acceptable Salt thereof, which Have Inhibitory activity on the Protein Kinase.It also relates to a Pharmaceutical compositionREFERIDA A LOS COMPUESTOS 3-(2,6-DICLORO-3,5-DIMETOXI-FENIL)-1-{6-[4-(4-ETIL-PIPERAZIN-1-IL)-FENILAMINO]-PIRIDIMIN-4-IL}-1-METIL-UREA Y 1-(2,6-DICLORO-3,5-DIMETOXI-FENIL)-3-{6-[4-(4-ETIL-PIPERAZIN-1-IL)-FENILAMINO]-PIRIMIDIN-4-IL}-UREA O UNA SAL FARMACEUTICAMENTE ACEPTABLE DE LOS MISMOS, LOS CUALES TIENEN ACTIVIDAD INHIBITORIA SOBRE LAS QUINASA DE PROTEINA. TAMBIEN ESTA REFERIDA A UNA COMPOSICION FARMACEUTICA