| 摘要 |
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 (2theta±0.2°) of 12.8°, 18.1° and/or 23.5°. This crystal excels in photostability, thereby being suitable for use as an active ingredient of preventive/therapeutic agents for diseases, such as costiveness.
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