1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(2-sulfophenyl)-4-[(2-sulfophenyl)azo]-, compd. with N-cyclohexylcyclohexanamine (1:2) 2-Pyrazoline-3-carboxylic acid, 5-oxo-1-(o-sulfophenyl)-4-(o-sulfophenylazo)-, salt with 2 f. wt. dicyclohexylamine 69745-87-5 NSC3766