The chemical Pemetrexed has a designated molecular formula of C20H21N5O6 and a molecular weight of 427.417 g/mol. Synonyms may include: N-(4-(2-(2-Amino-3,4-dihydro-4-oxo-7H-pyrrolo(2,3-d)pyrimdin-5-yl)ethyl)benzoyl)glutamic acid, HSDB 7316, Alimta, UNII-04Q9AIZ7NO, Premetrexed [Common mis-spelling] (ChemID). Pemetrexed has been assigned a MeSH pharmacological action of: Antineoplastic, ,", ",, Folic Acid Antagonist, Nucleic Acid Synthesis Inhibitor.