Adrenocorticotropic Hormone (ACTH) (1-39), rat is a potent melanocortin 2 (MC2) receptor agonist.Peptide fragments of ACTH (1-39) were formed during in vitro incubation of the peptide with membrane preparations. ACTH (1-39) were isolated by high pressure liquid chromatography, and peptide fragments of ACTH (1-39) characterized by determination of amino acid composition and NH2- terminal residue.

STM2120 is a potent METTL3 inhibitor (IC50: 64.5 μM) with inhibitory effect on METTL14.

Acetalin-3 (Ac-RFMWMT-NH2), a hexapeptide, is a μ opioid receptor antagonist with high affinity for μ and κ3 opioid receptor, weak affinity for κ1 receptors and no affinity for κ2 receptors.