2-Amino-4-chlorobenzonitrile (2A4CBN) is a benzonitrile derivative. A study of the molecular structure, vibrational spectra and NBO analysis of 2A4CBN has been undertaken.Transformation of 2A4CBN into quinazoline-2,4(1H,3H)-diones at atmospheric pressure 웿 Ɓ ñ ꅄ眓᧘ठࠃ 眓