A Polymorphic Form I of 2-amino-N- [2- (3a- (R) -benzyl-2-methyl-3-oxo-2,3,3a, 4,6,7-hexahydropyrazole L-tartrate [4 , 3-c] pyridin-5-yl) -1- (R) -benzyloxymethyl-2-oxo-ethyl] -isobutyramide, which is characterized by an X-ray powder diffraction pattern (PXRD) obtained by irradiation with Cu-Ka radiation that has the main peaks at 4.4, 10.2, 12.5, 13.2, 13.7, 16.4, 16.6, 18.5, 19.3 and 21.7 +/- 0.2 2-Theta.Una Forma polimórfica I de L-tartrato de 2-amino-N-[2-(3a-(R)-bencil-2-metil-3-oxo-2,3,3a,4,6,7-hexahidropirazolo[ 4,3-c]piridin-5-il)-1-(R)-benciloximetil-2-oxo-etil]-isobutiramida, que se caracteriza por un patrón de difracción de polvo de rayos X (PXRD) obtenido mediante la irradiación con la radiación Cu-Ka que tiene los picos principales a 4,4, 10,2, 12,5, 13,2, 13,7, 16,4, 16,6, 18,5, 19,3 y 21,7 +/- 0,2 2-Theta.
