1-Phenyl-3-methyl-5-amino-4-((2,4-dinitrophenyl)azo)pyrazole 12239-57-5 1H-Pyrazol-5-amine, 4-((2,4-dinitrophenyl)azo)-3-methyl-1-phenyl- 4-((2,4-Dinitrophenyl)azo)-3-methyl-1-phenyl-1H-pyrazol-5-amine 67162-11-2 EINECS 266-591-4