Pemetrexed

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** A synthetic pyrimidine-based antifolate. Pemetrexed binds to and inhibits the enzyme thymidylate synthase (TS), which catalyses the methylation of 2'-deoxyuridine-5'-monophosphate (dUMP) to 2'-deoxythymidine-5'-monophosphate (dTMP), an essential precursor in DNA synthesis.

**Synonyms:** - L-Glutamic Acid, N-(4-(2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo(2,3-d)pyrimidin-5-yl)ethyl)benzoyl) - MTA - Multitargeted Antifolate - PEMETREXED - Pemfexy