2-((9,10-Dihydro-9,10-dioxo-1-anthryl)azo)-3-oxo-N-phenylbutyramide 64611-93-4 Butanamide, 2-((9,10-dihydro-9,10-dioxo-1-anthracenyl)azo)-3-oxo-N-phenyl- EINECS 264-973-5