(R) -1- (2,2-difluorobenzo [d] [I, 3] dioxol-5-yl) -N- (1- (2,3-dihydroxypropyl) -6-fluoro-2- (1-hydroxy -2-methyl-2-yl) -1 H-indole-5-yl) cyclopropanecarboxamide characterized as crystalline Form A, in which Form A is characterized by one or more peaks at 19.3 to 19.7 degrees, 21.5 to 21.9 degrees, and 16.9 to 17.3 degrees on an X-ray powder diffraction graph obtained using Cu K alpha radiation.(R)-1-(2,2-difluorobenzo[d][I,3]dioxol-5-ilo)-N-(1-(2,3-dihidroxipropilo)-6-fluoro-2-(1-hidroxi-2-metilo-2-ilo)-1 H-indol-5-ilo)ciclopropanocarboxamida caracterizado como la forma A cristalina, en la que la Forma A se caracteriza por uno o más picos a 19,3 a 19,7 grados, 21,5 a 21,9 grados, y 16,9 a 17,3 grados en un gráfico de difracción de polvo de rayos X obtenidos usando radiación alfa Cu K.
