The chemical Creatinine has a designated molecular formula of C4H7N3O and a molecular weight of 113.120 g/mol. Synonyms may include: AI3-15321, Creatinine,heated, EINECS 200-466-7, 1-Methylglycocyamidine, 1-Methylhydantoin-2-imide, NSC 13123, UNII-AYI8EX34EU, EC 200-466-7 (ChemID).