pemetrexed

noun

pem·​e·​trex·​ed ˌpem-ə-ˈtrek-ˌsed 

: an antineoplastic drug that is an antagonist of folic acid and is administered by injection in the form of its hydrated disodium salt C₂₀H₁₉N₅Na₂O₆·7H₂O to treat pleural mesothelioma and some forms of lung cancer

Pemetrexed, a folate antimetabolite, was evaluated as a candidate for maintenance therapy because it is effective, relatively well tolerated, and easy to administer.

—Tracy Hampton, The Journal of the American Medical Association

Note: Pemetrexed is marketed under the trademark Alimta.