CAS Number: 122752-16-3 Molecular Weight: 782.4 Salt Form: TFA Purity: >95% Sequence (3-letter): Tyr-D-Ala-Phe-Glu-Val-Val-Gly-NH2 Sequence (1-letter): YaFEVVG-NH2 Storage: -20 ?C or below [D-Ala2]-Deltorphin II (DADELT II) is a selective peptide agonist for the ?2 opioid receptor with a Ki or IC50 value of 0.41 nM. Administration of [D-Ala2]-Deltorphin II results in dose-dependant antinociception.