Melphalan Impurity A

(S)-2-amino-3-(4-(bis(2-hydroxyethyl)amino)phenyl)propanoic acid|4-[bis(2-hydroxyethyl)amino]-l-phenylalanine,|4-[bis(2-hydroxyethyl)amino]-L-phenylalanine;|Dihydroxy Melphalan|Dihydroxy Melphalan ;