C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 405/14 (2006.01)
Patent
CA 2596735
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.theta.~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.
L~invention concerne un cristal de 5-[2-amino-4-(2-furyl)pyrimidin-5-yl]-1-méthylpyridin-2(1H)-one présentant, lors d~une analyse par diffractométrie des rayons X sur poudre, des pics de diffraction aux angles de diffraction (2.theta. ± 0,2°) 12,8°, 18,1° et/ou 23,5°. Ce cristal est excellent en termes de photostabilité, ce qui le rend utile en tant que principe actif dans des agents préventifs/thérapeutiques de troubles tels que les scybales.
Chiba Hiroyuki
Harada Hitoshi
Ishihara Hiroshi
Sato Yoshiaki
Takigawa Teiji
Eisai R&d Management Co. Ltd.
Marks & Clerk
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