... 3Chemical Name:pemetrexed disodium intermediate: N-[4-[2-(2-amino-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d] ... 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 N5 O6Mol.weight ... :≤0........................................... pemetrexed intermeidate (S)-Diethyl 2-(4-(2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d] ...