4-benzothiazol-2-yldithio-1-<2-methyl-1-(p-nitrobenzoyloxymethyl)prop-2-enyl>-3-phenoxyacetamidoazetidin-2-one

dimethyl 2-allyl-2-(benzo[d]thiazol-2-ylthio)hexanedioate

dimethyl 2-(2-pentynyl)-2-(2-benzothiazolylthio)adipate

methyl 2-allyl-2-(benzo[d]thiazol-2-ylthio)octanoate

p-nitrobenzyl 2β-bromomethyl-2α-methyl-6β-phenoxyacetamidopenam-3α-carboxylate