138580-44-6 1H-Indolo(3,2-c)quinoline-1,4(11H)-dione, 6-methyl- 6-Methyl-1H-indolo(3,2-c)quinoline-1,4(11H)-dione 6-Methylindolo(3,2-c)quinoline-1,4-dione CCRIS 5246