The molecule is an octuply-charged cyclic tetrapyrrole anion arising from global deprotonation of the carboxy groups of sirohydrochlorin; major species at pH 7.3. It has a role as a Saccharomyces cerevisiae metabolite and a cofactor. It is a conjugate base of a sirohydrochlorin.
3-[(2S,3S,7S,8S)-7,13,17-tris(2-carboxylatoethyl)-3,8,12,18-tetrakis(carboxylatomethyl)-3,8-dimethyl-2,7,23,24-tetrahydroporphyrin-2-yl]propanoate