(E)-3-(2,5-Dichloro-4-methoxycarbonylmethylsulfanyl-phenyl)-acrylic acid

(E)-3-(4-Carboxymethylsulfanyl-2,5-dichloro-phenyl)-acrylic acid tert-butyl ester

(E)-3-(2,5-Dichloro-4-methoxycarbonylmethylsulfanyl-phenyl)-acrylic acid tert-butyl ester

(E)-3-(2,5-Dichloro-4-methoxycarbonylmethylsulfanyl-phenyl)-acrylic acid 2,5-dioxo-pyrrolidin-1-yl ester

2-({4-[(1E)-2-{[2-(tert-butoxy)-2-oxoethyl]carbamoyl}eth-1-en-1-yl]-2,5-dichlorophenyl}sulfanyl)acetic acid