2,4-Dihydro-4-((2-ethoxyphenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-one 3H-Pyrazol-3-one, 4-((2-ethoxyphenyl)azo)-2,4-dihydro-5-methyl-2-phenyl- 4-((2-Ethoxyphenyl)azo)-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one 67969-66-8 EINECS 267-973-3