2,8-bis-(2-hydroxyethyl)-13,17-bis-(2-methoxycarbonylethyl)-3,7,12,18-tetramethylporphin

3-[(5Z,10Z,14Z,19E)-7,12-Bis-(2-hydroxy-ethyl)-20-methanesulfonyloxy-18-(2-methoxycarbonyl-ethyl)-3,8,13,17-tetramethyl-porphyrin-2-yl]-propionic acid methyl ester

ethyl 5-acetoxymethyl-3-ethoxycarbonylmethyl-4-methylpyrrole-2-carboxylate

5,5'-dicarboxy-3'-(2-chloroethyl)-4-(2-acetoxyethyl)-3,4'-dimethylpyrromethane

benzyl 3-(methoxycarbonylmethyl)-4'-(ethoxycarbonylmethyl)-3',4-dimethyl-5'-ethoxycarbonylpyrromethane-5-carboxylate