The molecule is a metallochlorin that is ferroheme b which is cis-dihydroxylated at positions 5 and 6. It has a role as a cofactor. It is a dicarboxylic acid, a ferroheme, a metallochlorin, a tertiary alcohol and a diol. It derives from a ferroheme b. It is a conjugate acid of a heme d cis-diol(2-).
3-[(17S,18R)-18-(2-carboxyethyl)-8,13-bis(ethenyl)-17,18-dihydroxy-3,7,12,17-tetramethylporphyrin-21,23-diid-2-yl]propanoic acid;iron