3089-16-5 4,11-Dichloro-5,12-dihydroquino(2,3-b)acridine-7,14-dione EINECS 221-423-9 Quinacridone, 4,11-dichloro- Quino(2,3-b)acridine-7,14-dione, 4,11-dichloro-5,12-dihydro-