Processes are provided for the preparation of a stable polymorphic form C of regadenoson, the process involving steps of a) obtaining a solution of regadenoson in benzyl alcohol solvent, b) maintaining the reaction mixture of step a) to about 10° C. to about 90° C., and c) isolating the stable polymorphic form C of regadenoson. Polymorphic form C may be characterized by an x-ray powder diffraction pattern with peaks at about 6.1, 10.2, 10.6, 19.0 and 25.4.±0.2 degrees 2-theta.
提供了制备雷加诺生稳定多型形式C的过程,该过程包括以下步骤:a) 在
苯甲醇溶剂中获得雷加诺生的溶液,b) 将步骤a)的反应混合物维持在大约10°C至大约90°C,以及c) 分离稳定的雷加诺生多型形式C。多型形式C可以通过X射线粉末衍射图谱表征,其峰值分别为大约6.1、10.2、10.6、19.0和25.4。±0.2度2θ。