... -pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L- glutamic acid diethyl esterOther Name: 11-Cyclopropyl-5,11-dihydro-4-methyl ... -6H-dipyrido[2,3-b:3',2'-e][1,4]diazepin-6-oneFormula:C24 H29 ... .weight:483Assay:≥99%Individual impurity:≤0........................................... pemetrexed intermeidate (S)-Diethyl 2-(4-(2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo ...