has role pentachloronitrobenzene A <em>C</em>-nitro compound that is nitrobenzene in which every hydrogen has been replaced by a chlorine. A fungicide used on a variety of crops, including cotton, rice and seed grains, it is no longer approved for use within the European Union. CHEBI:34908 C-nitro compound pentachlorobenzenes antifungal agrochemical aromatic fungicide