Pemetrexed Disodium Heptahydrate - Impurity C

1802552-16-4

Pemetrexed (5S)-Dimer; (2S,2'S)-2,2'-((4,4'-(((S)-2,2'-diamino-4,4',6-trioxo-1,4,4',6,7,7'-hexahydro-1'H,5H-[5,6'-bipyrrolo[2,3-d]pyrimidine]-5,5'-diyl)bis(ethane-2,1-diyl))bis(benzoyl))bis(azanediyl))diglutaric acid; Pemetrexed S-dimer; (2S,2'S)-2,2'-{[(S)-2,2'-Diamino-4,4',6-trioxo-1,4,4',6,7,7'-hexahydro-1'H,5H -5,6'-bipyrrolo[2,3-d]pyrimidine-5,5'-diyl]bis(ethylenebenzene-4,1-diylcarbonylimino)}diglutaric Acid (USP);