Refers to a Crystalline form of the acetate Salt of the compound (R) - 7 - (2 - (1 - (4 - Butoxy - phenyl) - 2 - (propan-2-yl Methyl amino) - 1 - hydroxy ethyl) - 5 - hydroxy - benzo [d] - thiazole 2 - (3H) - one of whose pattern of formula (i) in x-ray Powder diffraction Angle 2 Theta is expressed in Three Peaks has Selected values of n 0.2\ufffd 8.8 16.4 , and 0 0.2\ufffd 20.8.2nd, when measured using Cuk Alpha Radiation. It also relates to a process for their Preparation and to a Pharmaceutical composition. This Compound is an agonist of the Adreno receptor beta 2 is useful for the treatment of muscular dystrophy, or disuse atrophy associated with cachexia, SarcopeniaSE REFIERE A UNA FORMA CRISTALINA DE LA SAL DE ACETATO DEL COMPUESTO (R)-7-(2-(1-(4-BUTOXI-FENIL)-2-METIL-PROPAN-2-IL-AMINO)-1-HIDROXI-ETIL)-5-HIDROXI-BENZO-[d]-TIAZOL-2(3H)-ONA DE FORMULA (I) CUYO PATRON DE DIFRACCION EN POLVO DE RAYOS X EXPRESADOS EN ANGULOS 2-THETA COMPRENDE TRES PICOS QUE TIENEN VALORES SELECCIONADOS DE 8.8 � 0.2�, 16.4 � 0.2� Y 20.8 � 0.2�, CUANDO SE MIDEN UTILIZANDO RADIACION DE CuK alfa. TAMBIEN SE REFIERE A UN PROCESO PARA SU ELABORACION Y A UNA COMPOSICION FARMACEUTICA. DICHO COMPUESTO ES UN AGONISTA DEL ADRENO-RECEPTOR BETA-2 SIENDO UTIL PARA EL TRATAMIENTO DE DISTROFIA MUSCULAR, ATROFIA RELACIONADA CON DESUSO, CAQUEXIA O SARCOPENIA
