;C.I.Pigment Red 254;Bright Red [SE, WN];Ferrari Red*;Blockx Red [BL];Chinese Red, vermillion (hue) [SI];Irgazin DPP Red BO [KP];Lukas Red [LK];Matisse Red Light [MT];Naphthol Red Medium? [RT];Permanent Red [RT];Permanent Red Deep [CH, RT;Bis-(p-chrolopheny)-1.4-diketopyrrolo(3.4-c)pyrrole;pigment red 254;Plasco red 254;3,6-bis(4-chlorophenyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione;