Notes: 3-chloro-L-Tyrosine is a derivative of L-tyrosine.{65194} It is formed from a reaction between the myeloperoxidase (MPO) product hypochlorous acid and L-tyrosine and has been used as a biomarker of oxidative damage induced by MPO. Plasma and atherosclerotic plaque levels of 3-chloro-L-tyrosine are increased in patients with various cardiovascular diseases.{65195} Plasma levels of 3-chloro-L-tyrosine are also increased in patients with colorectal cancer. 3-chloro-L-Tyrosine is also formed in blood upon chlorine gas exposure and has been used as an indicator of chlorine poisoning during autopsy.{65196}