Synonyms: Phenol,p-nitro-, hydrogen sulfate (ester), potassium salt (8CI);Phenol, p-nitro-,hydrogen sulfate, potassium salt (6CI,7CI);Sulfuric acid, mono(4-nitrophenyl)ester, potassium salt (9CI);Potassium 4-nitrophenyl sulfate;Potassiump-nitrophenyl sulfate;