(1,1'-Biphenyl)-2-ol, 5-((4-((2,4-dinitrophenyl)amino)phenyl)azo)- 12223-91-5 5-((4-((2,4-Dinitrophenyl)amino)phenyl)azo)(1,1'-biphenyl)-2-ol 69121-16-0 C.I. Disperse Yellow 70 EINECS 235-421-0