perinone

Also known as Vat Orange 7, C.I. 71105, C.I. Pigment Orange 43, Bisbenzimidazo[2,1-b:2',1'-i]benzo[lmn][3,8]phenanthroline-8,17-dione

Perinone is a class of organic compounds. The parent compound has two isomers, each of which are useful pigments.

Wikidata facts

Mass: 412.096026
Image: PO43 Orange périnone b.jpg

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chemical formula: C₂₆H₁₂N₄O₂
canonical SMILES: C1=CC=C2C(=C1)N=C3N2C(=O)C4=CC=C5C6=C(C=CC3=C46)C(=O)N7C5=NC8=CC=CC=C87
Commons category: Perinone

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Perinone is a class of organic compounds. The parent compound has two isomers, each of which are useful pigments.

It is prepared from naphthalenetetracarboxylic dianhydride by condensation with o-phenylenediamine. The two Isomers of perinone are useful pigments. The trans isomer is called Pigment Orange 43 ("PO43", ) and the cis isomer is called Pigment Red 194 ("PR194", ). Like some structurally related compounds perinone is also an organic semiconductor.