僅用于工業應用或科學研究，不可用于人類或動物的臨床診斷或治療，非藥用.Pemetrexed disodium heptahydrate is a novel antifolate, the Ki values of the pentaglutamate of LY231514 are 1.3, 7.2, and 65 nM for inhibits thymidylate synthase （TS）, dihydrofolate reductase （DHFR）, and glycinamide ribonucleotide formyltransferase （GARFT）, respectively.