14847-56-4

Einecs 238-909-1 1-phenyl-3-methyl-4-(2-hydroxy-5-nitrophenylazo)pyrazol-5-one 4-(2-Hydroxy-5-nitrophenylazo)-3-methyl-1-phenyl-2-pyrazolin-5-one 2,4-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-one 4-({2-hydroxy-5-nitrophenyl}diazenyl)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one 3H-Pyrazol-3-one, 2,4-dihydro-4-[2-(2-hydroxy-5-nitrophenyl)diazenyl]-5-methyl-2-phenyl-