英文别名
4-(2'-hydroxybenzeneazo)-3-methyl-1-phenyl-5-pyrazolone;5-methyl-2-phenyl-2H-pyrazole-3,4-dione 4-[(2-hydroxy-phenyl)-hydrazone];2,4-dihydro-4-[(2-hydroxyphenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-one;4-[(2-hydroxyphenyl)diazenyl]-5-methyl-2-phenyl-4H-pyrazol-3-one