Dityrosine

[1,1'-Biphenyl]-3,3'-dipropanoicacid, a3,a3'-diaMino-6,6'-dihydroxy-

2-Amino-3-[5'-(2-amino-2-carboxy-ethyl)-6,2'-dihydroxy-biphenyl-3-yl]-propionic acid

2-amino-3-[3-[5-(2-amino-2-carboxy-ethyl)-2-hydroxy-phenyl]-4-hydroxy-phenyl]propanoic acid

2-amino-3-[3-[5-(2-amino-3-hydroxy-3-oxopropyl)-2-hydroxyphenyl]-4-hydroxyphenyl]propanoic acid