description： 3-Iodobenzonitrile is a halogenated aromatic nitrile. Its standard (ρ° = 0.1MPa) molar enthalpy of formation was determined by combustion calorimetry. application： 3-Iodobenzonitrile may be used as a starting reagent in the synthesis of tetrachloroisophthalo-[14C]-nitrile (TCIN). It may also be used in the preparation of: 1-(3-iodophenyl)-3-{2-[4-(trifluoromethyl)-1-piperidinyl]ethyl}-2-imidazolidinone；piperidine derivative；chiral amino acid anilide