2,9-Bis(4-chlorophenyl)anthra(2,1,9-def:6,5,10-d'e'f')diisoquinoline-1,3,8,10(2H,9H)-tetrone 2379-77-3 35869-63-7 57455-87-5 71872-61-2 Anthra(2,1,9-def:6,5,10-d'e'f')diisoquinoline-1,3,8,10(2H,9H)-tetrone, 2,9-bis(4-chlorophenyl)- C.I. Pigment Red 189 EINECS 219-166-2