Molecular Weight: 3349.65 Salt Form: TFA Purity: >96% Sequence (3-letter): Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Gln-Phe-Lys-Val-Val-Thr-Arg-Ser-Gln-Glu-Asp-Pro-Asn-Ala-Tyr-Ser-Gly-Glu-Leu-Phe-Asp-Ala-OH Sequence (1-letter): YGGFLRRQFKVVTRSQEDPNAYSGELFDA-OH Storage: -20 ?C or below Leumorphin is an endogenous opioid peptide which corresponds to the 226-254 fragment of Preproenkephalin B. It is also known as Dynorphin B1-29. Leumorphin is potent and selective ?-opioid receptor agonist.