Crystals of 5-[2-amino-4-(2-furyl)pyrimidin-5-yl]-1-methylpyridin-2(1H)-one having a diffraction peak at a diffraction angle (2θ±0.2°) of 9.7° and/or 21.9° in a powder X-ray diffraction are suitable for an active ingredient of a preventing and therapeutic agent for diseases such as constipation. Crystals of 5-[2-amino-4-(2-furyl)pyrimidin-5-yl]-1-methylpyridin-2(1H)-one hydrate and amorphous 5-[2-amino-4-(2-furyl)pyrimidin-5-yl]-1-methylpyridin-2(1H)-one hydrate are also suitable for an active ingredient of a preventing and therapeutic agent for diseases such as constipation.
在粉末X射线衍射中,在衍射角度(2θ±0.2°)为9.7°和/或21.9°处具有衍射峰的5- [2-
氨基-4-(2-
呋喃基)
嘧啶-5-基] -1-
甲基吡啶-2(1H)-酮晶体适用于预防和治疗便秘等疾病的活性成分。5- [2-
氨基-4-(2-
呋喃基)
嘧啶-5-基] -1-
甲基吡啶-2(1H)-酮
水合物晶体和无定形5- [2-
氨基-4-(2-
呋喃基)
嘧啶-5-基] -1-
甲基吡啶-2(1H)-酮
水合物也适用于预防和治疗便秘等疾病的活性成分。