11-bromo-11,11a-dimethoxy-5-methyl-11,11a-dihydro-5H-[1,3]dioxolo[4,5-b]acridin-10-one
11,11,11a-trimethoxy-5-methyl-11,11a-dihydro-5H-[1,3]dioxolo[4,5-b]acridin-10-one
11-ethoxy-11,11a-dimethoxy-5-methyl-11,11a-dihydro-5H-[1,3]dioxolo[4,5-b]acridin-10-one
11-bromo-10-bromooxy-11,11a-dimethoxy-5-methyl-11,11a-dihydro-[1,3]dioxolo[4,5-b]acridinium; tribromide
11a-methoxy-5-methyl-5H,11aH-[1,3]dioxolo[4,5-b]acridine-10,11-dione