21H,23H-Porphine-2-propanoic acid, 18-carboxy-20-(carboxymethyl)-8-ethenyl-13-ethyl-2,3-dihydro-3,7,12,17-tetramethyl-, tripotassium salt, (2S,3S)- 72984-37-3 EINECS 277-171-5 Tripotassium (2S-trans)-18-carboxylato-20-(carboxylatomethyl)-13-ethyl-2,3-dihydro-3,7,12,17-tetramethyl-8-vinyl-21H,23H-porphine-2-propionate