<unk>  <unk> , also known as normelatonin, is a naturally occurring chemical precursor and intermediate in the endogenous production of melatonin from serotonin. It also has biological activity in its own right, including acting as a melatonin receptor agonist, an agonist of the TrkB, and having antioxidant effects.
N-Acetylserotonin
Serotonin
Acetylcholine
Beta-Endorphin
Gluten exorphin
Neuropil
Opioid peptide
Somatostatin