CAS Number: 64963-01-5Molecular Weight: 569.29 Salt Form: TFA Purity: >96% Sequence (3-letter): Tyr-D-Ala-Gly-Phe-Leu-OH Sequence (1-letter): YaGFL-OH Storage: -20 °C or below

Leu-Enkephalin [D-Ala2] is a long-acting and potent analog of Leu-enkephalin that is resistant to enzymatic degradation. Enkephalins are endogenous neuropeptides which bind to the delta and mu opiod receptors and regulate nociception. Two forms of enkephalin exist: Leu-enkephalin (Tyr-Gly-Gly-Phe-Leu) and Met-enkephalin (Tyr-Gly-Gly-Phe-Met).