Methyl 4-prenyloxycinnamate is a Phenylpropanoids product that can be isolated from the barks of Cinnamomum cassia.

Alytesin, a bombesin-like peptide, is found in extracts of the skin of Alytes obstetricans. Alytesin reduces gastric acid secretion and induces hypertension. Alytesin also induces short-term anorexigenic effects in neonatal chicks

Neuromedin U,a 23-amino acid brain-gut peptide, regulates several important physiological functions through its cognate receptor NMUR2 in the central nervous system, including energy balance, stress response, and nociception.