Molecular Formula: C₁₈H₁₂N₂O₂

Chemical Name
1,4-diketo-2,5-dihydro-3,6-diphenyl-pyrrolo[3,4-c]pyrrole
1,4-diketo-3,6-diphenyl-2,5-dihydropyrrolo[3,4-c]pyrrole
2,5-dihydro-3,6-diphenyl-pyrrolo[3,4-c]pyrrole-1,4-dione
2,5-Dihydro-3,6-diphenylpyrrolo<3,4-c>pyrrol-1,4-dion
3,6-diphenyl-2,5-dihydro-pyrrolo[3,4-c]pyrrole-1,4-dione
C.I. Pigment Red 255
DPP

Molecular Formula: C₁₅H₁₄O₃

Chemical Name
3-(2-naphthyl)-3-oxo-propionic acid ethyl ester
3-naphthalen-2-yl-3-oxo-propionic acid ethyl ester
ethyl (β-naphthylbenzoyl)acetate
ethyl 2-naphthoyl-acetate
ethyl 3-(2-naphthyl)-3-oxopropanoate
ethyl 3-(naphthalen-2-yl)-3-oxopropanoate
ethyl naphthalene-2-carbonyl acetate

Molecular Formula: C₂₄H₁₆N₂O₂

Chemical Name
3-phenyl-6-(4'-biphenylyl)-2,5-dihydro-1,4-diketopyrrolo[3,4-c]pyrrole

Molecular Formula: C₂₆H₁₆N₂O₂

Molecular Formula: C₂₆H₁₆N₂O₂

Molecular Formula: C₃₀H₂₀N₂O₂

Chemical Name
3,6-bis(biphenyl-4-yl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione
C.I. Pigment Red 264
Pigment Red 264
PR264

Molecular Formula: C₁₇H₁₅NO₃

Chemical Name
ethyl 4,5-dihydro-5-oxo-2-(2-naphthyl)(1H)pyrrole-3-carboxylate
ethyl 4,5-dihydro-5-oxo-2-naphthalen-2-yl-1H-pyrrole-3-carboxylate
ethyl 4,5-dihydro-5-oxo-2-naphthyl-1H-pyrrole-3-carboxylate
ethyl-4,5-dihydro-5-oxo-2-naphthyl(1H)pyrrole-3-carboxylate

Molecular Formula: C₁₉H₂₀O₅

Molecular Formula: C₂₂H₁₄N₂O₂

Chemical Name
3-(2-naphthyl)-6-phenyl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione

Molecular Formula: C₂₂H₁₄N₂O₂

Molecular Formula: C₂₆H₁₈N₂O₂

Chemical Name
3-(4-stilbenyl)-6-phenyl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione

Molecular Formula: C₃₄H₂₄N₂O₂