4-[(5-chloro-2-hydroxy-3-nitrophenyl)azo]-3-methyl-1-phenyl-2-pyrazolin-5-one

4-[(5-chloro-2-hydroxy-3-nitrophenyl)azo]-3-methyl-1-phenyl-2-pyrazolin-5-one · CAS 15394-93-1

4-[(5-chloro-2-hydroxy-3-nitrophenyl)azo]-3-methyl-1-phenyl-2-pyrazolin-5-one