2-[2-(2,4-dichlorophenyl)ethylsulfanylmethyl]-2-hydroxybutanedioic acid
2-[2-(2,4-dichlorophenyl)ethylsulfanylmethyl]-2-hydroxy-butanedioic acid
2-[[2-(2,4-dichlorophenyl)ethylthio]methyl]-2-hydroxybutanedioic acid
2-[[2-(2,4-dichlorophenyl)ethylthio]methyl]-2-hydroxy-succinic acid