Sequence (linear): D-Phe-Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH2 , Storage and Stability: Lyophilized powder may be stored at 4°C for short-term only. Stable for 12 months at -20°C. Reconstitute (see reconstitution instructions for peptides) and store at -20°C. For maximum recovery of product, centrifuge the original...

Description: Potent and selective µ opioid receptor antagonist (IC50 = 3.5 nM). Displays > 1200-fold selectivity over delta opioid and somatostatin receptors. Brain penetrant and active in vivo. Smiles:...