alkylating agent melphalan Phenylalanine mustard L-Phenylalanine mustard melphalanum p-N,N-bis(2-chloroethyl)amino-L-phenylalanine L-Sarcolysine p-Di-(2-chloroethyl)amino-L-phenylalanine Phenylalanine nitrogen mustard 3-(p-(Bis(2-chloroethyl)amino)phenyl)-L-alanine melfalano p-Bis(beta-chloroethyl)aminophenylalanine melphalan 4-(Bis(2-chloroethyl)amino)-L-phenylalanine 4-[bis(2-chloroethyl)amino]-L-phenylalanine L-3-(p-(Bis(2-chloroethyl)amino)phenyl)alanine A phenylalanine derivative comprising <small>L</small>-phenylalanine having [bis(2-chloroethyl)amino group at the 4-position on the phenyl ring. L-PAM p-N-Bis(2-chloroethyl)amino-L-phenylalanine p-L-Sarcolysin 4-[bis(2-chloroethyl)amino]-L-phenylalanine 3-p-(Di(2-chloroethyl)amino)-phenyl-L-alanine antineoplastic agent immunosuppressive agent organochlorine compound nitrogen mustard carcinogenic agent non-proteinogenic L-alpha-amino acid L-phenylalanine derivative drug allergen