Tetramethylporphyrin

Cadmium;3-[(1z,4z,10z,14z)-7,12,17-tris(2-carboxyethyl)-3,8,13,18-tetramethylporphyrin-21,22,23,24-tetraid-2-yl]propanoic Acid

dimethyl 3,3'-[7,12-bis(1-methoxyethyl)-3,8,13,17-tetramethylporphyrin-2,18-diyl]dipropanoate