<unk>  <unk> -MH) is a post-translationally modified amino acid which is excreted in human urine. Urinary concentration of<unk>  is a biomarker for skeletal muscle protein breakdown in humans who have been subject to muscle injury. Urinary<unk>  concentrations are also elevated from consumption of soy-based products and meat, particularly chicken.
3-Methylhistidine
Cysteamine
Inositol
Homocysteine
Uridine triacetate
Fructosamine
Homotaurine
Nicotinamide