2-(Acetylthioglycolic amide)benzothiazole 63123-39-7 EINECS 263-882-8 Ethanethioic acid, S-(2-(2-benzothiazolylamino)-2-oxoethyl) ester S-(2-(2-Benzothiazolylamino)-2-oxoethyl) ethanethioate S-Benzothiazol-2-ylcarbamoylmethyl thioacetate