6-(4-甲氧基苯基)吡嗪-3(2H)-酮

乙醛酸

对羟基苯乙酮

6-(4-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinone

4-Hydroxy-6-(4-hydroxy-phenyl)-4,5-dihydro-2H-pyridazin-3-one