DL-Thyronin, DL-THYRONINE, O-(4-Hydroxyphenyl)-DL-tyrosine, 4-(4-Hydroxy-phenoxy)-phenylalanin, 2-amino-3-[4-(4-hydroxyphenoxy)phenyl]propanoic acid, 2-Amino-3-(4-(4-hydroxyphenoxy)phenyl)propanoic acid, 3-(p-[p-Hydroxyphenoxy]phenyl)-L-alanine, 3-(p-[p-Hydroxyphenoxy]phenyl)-DL-alanine