Bortezomib Impurity 9

Uses

N-(2-Pyrazinylcarbonyl)-L-phenylalanyl-N-[(1R)-1-borono-3-methylbutyl]-L-phenylalaninamide is an impurity of Bortezomib (B675700) and a tripeptide boronic acid proteasome inhibitor used as an antitumor agent.