8-deaza-10-propargylfolic acid

N10-propargyl-8-deazaaminopterin

(S)-2-(4-{[2-(2,2-Dimethyl-propionylamino)-6-methyl-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-5-ylmethyl]-prop-2-ynyl-amino}-benzoylamino)-pentanedioic acid diethyl ester