C.I. Pigment Red 260

α-[[2,3-Dihydro-3-[(hexahydro-2,4,6-trioxopyrimidin)-5-ylidene]-1H-isoindol]-1-ylidene]-4(1H)-oxo-2-quinazolineacetonitrile

alpha -[2,3-dihydro-3-(tetrahydro-2,4,6-trioxo-5(2H)-pyrimidinylidene)-1H-isoindol-1-ylidene]-1,4-d2-Quinazolineacetonitrile

alpha-[2,3-dihydro-3-(tetrahydro-2,4,6-trioxo-5(2H)-pyrimidinylidene)-1H-isoindol-1-ylidene]-1,4-dihydro-4-oxoquinazoline-2-acetonitrile