abstract |
Crystal of 5-[2-amino-4-(2-furyl)pyrimidin-5-yl]-1- methylpyridin-2(1H)-one exhibiting, in powder X-ray diffractometry, diffraction peaks at diffraction angles (2+-0.2 DEG ) of 12.8 DEG , 18.1 DEG and/or 23.5 DEG . This crystal excels in photostability, thereby being suitable for use as an active ingredient of preventive/therapeutic agents for diseases, such as costiveness. |