Synonyms: pigment red 122;3,10-dimethyl-5,12-dihydroquino[2,3-b]acridine-7,14-dione;quino[2,3-b]acridine-7,14-dione, 5,12-dihydro-3,10-dimethyl-;Quino[2,3-b]acridine-7,14-dione,5,12-dihydro-3,10-dimethyl-;3,10-dimethylquinacridone;3,10-Dimethyl-chinacridon;