Synonyms: L-Tyrosine,N-[N-acetyl-4-[bis(2-chloroethyl)amino]-DL-phenylalanyl]-, ethyl ester;Tyrosine, N-[N-acetyl-3-[p-[bis(2-chloroethyl)amino]phenyl]-DL-alanyl]-, ethylester (7CI); Tyrosine,N-[N-acetyl-3-[p-[bis(2-chloroethyl)amino]phenyl]-DL-alanyl]-, ethyl ester, L-(8CI); Astiron; Astirone; Astyron; Astyrone