2-Anthracenecarboxamide, N,N'-(9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)bis[1-amino-9,10-dihydro-9,10-dioxo- 2-Anthramide, N,N'-1,4-anthraquinonylenebis[1-amino-9,10-dihydro-9,10-dioxo- 4430-70-0 C.I. 61670 C.I. Vat Red 21 Caledon Red 4B Indanthren Rubine GR NSC299135 Palanthrene Rubine GR