4-nitrophthalonitrile cas 31643-49-9 Chemical Name: 4-Nitrophthalonitrile Other name: 5-Nitrobenzene-1,2-dicarbonitrile;4-nitro-2-benzenedicarbonitrile; CAS No.: 31643-49-9 Molecular Fomula:C8H3N3O2 Molecular weight:173.13 Molecular structure: Appearance: Class…