CAS: 21799-87-1 Molecular Formula: C6H5KO5S Molecular Weight (g/mol): 228.259 MDL Number: MFCD00007475 InChI Key: VKDSBABHIXQFKH-UHFFFAOYSA-M Synonym: potassium 2,5-dihydroxybenzenesulfonate,hydroquinonesulfonic acid potassium salt,potassium2,5-dihydroxybenzenesulfonate,unii-249e3f00ep,benzenesulfonic acid, 2,5-dihydroxy-, monopotassium salt,2,5-dihydroxybenzenesulfonic acid potassium salt,potassium hydroquinonesulfonate,hydroquinone sulfonic acid potassium salt,hydroquinone sulfonic acid, potassium salt,benzenesulfonic acid, 2,5-dihydroxy-, potassium salt 1:1 PubChem CID: 23672329 IUPAC Name: potassium;2,5-dihydroxybenzenesulfonate SMILES: C1=CC(=C(C=C1O)S(=O)(=O)[O-])O.[K+]