A potent antagonist highly selective for Mu opioid receptor (Ki = 0.96nM for u receptor and > 10,000nM for delta receptors). Often used for studying the functional roles of Mu opioid receptors in both central and peripheral nervous systems. Sequence:D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (Orn: ornithine; Pen: penicillamine; SS bond: 2-7)Solubility:H2OPrimary Target:mu opioidPrimary Target Ki:0.96nMMolar Mass:1062.28Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
