[bAla8]-Neurokinin A(4-10) is a neurokinin 2 (NK2) receptor agonist.

4A3-SC8 is a modular dendritic macromolecule with cationic and lipophilic groups that enables small RNAs to prolong survival in an aggressive hepatocellular carcinoma model and can be used to synthesize lipid nanoparticles.

[Met5]-Enkephalin, amide is an agonist for δ opioid receptors as well as putative ζ (zeta) opioid receptors.Met-enkephalin circulates in several forms, some of which may be derived from proteins other than proenkephalin A, and plasma levels of both free native, and peptidase-derivable Met-enkephalin are modulated physiologically.