4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoic acid

4-[2-(2-amino-4,7-di ; 4[2-(2-amino-4,7-dihydro-4-oxo-1h-pymol [2,3-pyrimodin-5-yl]ethyl) benzoic acid ; 4- 2-(2-amino-4,7-dihydro-4-oxo-1h-pyrrolo 2... ; 4-[2-(-amino-4,7-dihydro-4-oxo-1h-pymol[2,3-d]pyrimodin-5-yl)ethyl]benzoic acid ; d pyrimodin -5-yl)ethyl benzoic acid ; 4-(2-{2-amino-4-oxo-3h,4h,7h-pyrrolo[2,3-d]pyrimidin-5-yl}ethyl)benzoic acid ; pymol-[2,3-d]pyrimidin-5-yl) ethyl] ; pemetrexed disodium int-4 ; pemetrexed impurity a ; pemetrexed intermediate(pmc)