3-(1H-5-hydroxybenzotriazol-6-yl)propionic acid

ethyl-3-(2-acetoxy-5-acetylamino-4-aminophenyl)propionate

ethyl-3-{2-(7-cyclohexyl-7-oxo-5E-heptenyloxy)-5-[4-(dimethylaminocarbonyl)butanoylamino]phenyl}propanoate

ethyl-3-{5-[4-(dimethylaminocarbonyl)butanoylamino]-2-(7-oxo-5E-pentadecenyloxy)phenyl}propanoate

ethyl-3-{5-[4-(dimethylaminocarbonyl)butanoylamino]-2-(7-oxo-5E-dodecenyloxy)phenyl}propanoate