76849-79-1

5-(4-methoxyphenyl)-2(1H)-Pyrazinone 5-(4-Methoxyphenyl)-2-hydroxypyrazine 5-(4-Methoxy-phenyl)-1H-pyrazin-2-one 2(1H)-Pyrazinone, 5-(4-methoxyphenyl)- 5-(4-methoxyphenyl)-1,2-dihydropyrazin-2-one