(Phenylthio)acetic Acid

[103-04-8] C8H8O2S (MW 168.23) InChI = 1S/C8H8O2S/c9-8(10)6-11-7-4-2-1-3-5-7/h1-5H,6H2,(H,9,10) InChIKey = MOTOSAGBNXXRRE-UHFFFAOYSA-N (preparation of various PhS-containing compounds, such as 3- or 4-hydroxy-2-(phenylthio)alkanoic acids, 4-oxo-2-(phenylthio)alkanoic acids, and α-phenylthio-β-lactams) Alternate Name: PTAA. Physical Data: mp 61–62 °C,1 62–63 °C;2 pKa 3.02 × 10−4 (0 °C), 2.76 × 10−4 (25 °C). Form Supplied in: colorless crystals; commercially available. Preparative Methods: by the substitution reaction of sodium chloroacetate with sodium benzenethiolate, or by the treatment of bromoacetic acid with thallium(I) benzenethiolate.2