Synonyms: 4-Nitrophenol, Paracetamol Imp. F (EP), Phenol, 4-nitro- (9CI, ACI), 4-Nitrophenol (ACI), Phenol, p-nitro- (8CI), 1-Hydroxy-4-nitrobenzene, 4-Hydroxy-1-nitrobenzene, 4-Hydroxynitrobenzene, Niphen, NSC 1317, p-Hydroxynitrobenzene, p-Nitrophenol