Skip to main content
An official website of the United States government

pemetrexed disodium

View Patient Information
The disodium salt of 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.
Synonym:multitargeted antifolate
US brand name:Alimta
Pemfexy
Foreign brand name:Almita
Abbreviation:MTA
Code name:LY 231514
LY231514
Chemical structure:L-glutamic acid, N-(4-(2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo(2,3-d)pyrimidin-5-yl)ethyl)benzoyl)
N-[4-[2-(2-amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid disodium salt
NSC code:698037
Search NCI's Drug Dictionary