116-90-5 4,4'-Di-7H-benz[de]anthracen-7-one 4,4'-Dibenzanthronil 4,4'-Dibenzanthronyl 7H-Benz[de]anthracen-7-one, 4,4'-di- Benzanthronyl Dibenzonyl NSC13989 WLN: L C6666 1A Q IVJ M- ML C6666 1A Q IVJ [4,4'-Bi-7H-benz[de]anthracene]-7,7'-dione