2-Methylanthra(2,1,9-def:6,5,10-d'e'f')diisoquinoline-1,3,8,10(2H,9H)-tetrone 3,4,9,10-Perylenetetracarboxylic acid 3,4:9,10-diimide, N-methyl- 67892-42-6 Anthra(2,1,9-def:6,5,10-d'e'f')diisoquinoline-1,3,8,10(2H,9H)-tetrone, 2-methyl- EINECS 267-574-4