3,12,16,17-Tetrachloroanthra(9,1,2-cde)benzo(rst)pentaphene-5,10-dione 3,12,16,17-Tetrachloroviolanthrene-5,10-dione 6373-20-2 Anthra(9,1,2-cde)benzo(rst)pentaphene-5,10-dione, 3,12,16,17-tetrachloro- C.I. 59820 C.I. VAT BLUE 22 Dinaphtho(1,2,3-cd:3',2',1'-lm)perylene-5,10-dione, 3,12,16,17-tetrachloro- EINECS 228-914-7 Indanthren Navy Blue TRR Palanthrene Navy Blue RB Vat Blue 22