Hepcidin-22 (human) is an inactive degradation product of hepcidin-25 that is present in the urine.

Boc-Gly-Gly-Phe-Gly-OH TFA is a self-assembly of N-protected and C-protected tetrapeptides and is a protease cleaved connector for antibody-drug binding (ADC).

5-Hydroxymethyluracil is an oxidation damage product derived from thymine or 5-methylcytosine. It is a product of thymine dioxygenase. Additional deamination products such as 5-hydroxymethyluracil are formed when cells are under oxidative stress that is induced either by oxidizing agents or by mitochondrial dysfunction.