thiosalicylic acid2-Carboxythiophenol2-Mercaptobenzoic acid2-Sulfanylbenzoic acid2-Thiosalicylic acidThiophenol-2-carboxylic acido-Benzoic acid thiolo-Carboxythiophenolo-Mercaptobenzoesaeureo-Mercaptobenzoic acido-Sulfhydrylbenzoic acido-Thiosalicylic acid