Metkephamid is discontinued (DEA controlled substance). It is a synthetic opioid pentapeptide and analogue of [Met]enkephalin. It behaves as a potent agonist of the δ- and μ-opioid receptors with roughly equipotent affinity, and also has similarly high affinity as well as subtype-selectivity for the κ3-opioid receptor. References: Burkhardt C, Frederickson RC, Pasternak GW. Metkephamid (Tyr-D-ala-Gly-Phe-N(Me)Met-NH2), a potent opioid peptide: receptor binding and analgesic properties. Peptides. 1982 Sep-Oct;3(5):869-71. PubMed PMID: 6294639.

纯度：≥98%

CAS：66960-34-7