CAS: 5399-63-3 Molecular Formula: C7H5KO5S Molecular Weight (g/mol): 240.27 MDL Number: MFCD00007509 InChI Key: PXRJBUPXKDXDLG-UHFFFAOYSA-M Synonym: p-potassiooxysulfonyl benzoic acid, potassium 4-sulfobenzoate, benzoic acid, 4-sulfo-, potassium salt 1:1, potassium 4-sulphobenzoate, p-sulphobenzoic acid, monopotassium salt, potassium hydrogen 4-sulphonatobenzoate, 4-sulfobenzoicacidmonopotassiumsalt, 4-sulphobenzoic acid monopotassium salt, 4-sulfobenzoic acid monopotassium salt, benzoic acid, 4-sulfo-, monopotassium salt PubChem CID: 23670833 IUPAC Name: potassium;4-sulfobenzoate SMILES: C1=CC(=CC=C1C(=O)[O-])S(=O)(=O)O.[K+]