ethyl 2-[bis(2-chloroethyl)sulfamoylamino]acetate

ethyl 2-(benzylcarbamoylamino)acetate

ethyl 2-[[8-[(2-ethoxy-2-oxoethyl)amino]-8-oxooctanoyl]amino]acetate

ethyl 2-[[2-(1H-indol-3-yl)-2-oxoacetyl]amino]acetate

ethyl 2-[[2-[[2-[(2-ethoxy-2-oxoethyl)carbamoyl]phenyl]disulfanyl]benzoyl]amino]acetate