Neuromedin U-8 (porcine) is a polypeptide that can be found by peptide screening. Peptide screening is a research tool that pools active peptides primarily by immunoassay. Peptide screening can be used for protein interaction, functional analysis, epitope screening, especially in the field of agent research and development.

protoheme used as nutrient fortifier, blood tonic and food additive for iron.

[Leu5]-Enkephalin, amide is a δ opioid receptor agonist. Enkephalin, one of several naturally occurring morphinelike substances (endorphins) released from nerve endings of the central nervous system and the adrenal medulla.