[(4-Bromo-phenyl)-methoxycarbonylmethylsulfanyl-methylsulfanyl]-acetic acid methyl ester

sulfomercapto-acetic acid

碘

dimethyl 2,2'-((phenylmethylene)bis(sulfanediyl))diacetate

二甲基2,2'-二硫烷二基二乙酸酯