The invention comprises (1) anhydrous crystalline forms of N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide, (2) pharmaceutical compositions comprising at least one such form, (3) methods for the treatment of a phosphodiesterase-5-mediated condition using at least one such form, and (4) methods for preparing such forms. The compound N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide has the following structure (I).
本发明包括:(1) N-[1-(2-乙氧乙基)-5-(N-乙基-N-甲基
氨基)-7-(4-
甲基吡啶-2-基
氨基)-1H-
吡唑并[4,3-d]
嘧啶-3-羧酰基]
甲烷磺酰胺的无
水晶形式,(2) 包含至少一种这样的形式的药物组合物,(3) 使用至少一种这样的形式治疗
磷酸二酯酶-5介导的疾病的方法,以及(4) 制备这样的形式的方法。化合物N-[1-(2-乙氧乙基)-5-(N-乙基-N-甲基
氨基)-7-(4-
甲基吡啶-2-基
氨基)-1H-
吡唑并[4,3-d]
嘧啶-3-羧酰基]
甲烷磺酰胺具有以下结构(I)。