The chemical Zinc protoporphyrin IX has a designated molecular formula of C34H32N4O4Zn and a molecular weight of 626.034 g/mol. Synonyms may include: Zinc protoporphyrin, EINECS 239-455-7, Protoporphyrin IX, zinc chelate, Zinc-protoporphyrin (ChemID). Zinc protoporphyrin IX has been assigned a MeSH pharmacological action of: Enzyme Inhibitor.