CAS Registry Number

CAS 31643-49-9 — 4-Nitrophthalonitrile

4-Nitrophthalonitrile is an aromatic nitrile compound featuring two cyano groups and a nitro substituent, widely used as a key intermediate in the synthesis of pharmaceuticals, agrochemicals, and advanced materials like liquid crystals and fluorescent dyes. It appears as a pale yellow to off-white crystalline solid with a distinct chemical odor. This product has a CAS number of 31643-49-9, a molecular formula of C8H3(CN)2NO2, and a molecular weight of 173.13 g/mol. It is stable under ambient storage conditions but requires careful handling due to its moderate toxicity, indicated by a signal word of "Warning." Molekula supplies 4-Nitrophthalonitrile from research to bulk quantities with full documentation and ISO 9001:2015 traceability.