Description: Peptide to [D-Arg2, Lys4]-Dermorphin (1-4) amide Form: Lyophilized powder CAS Number : 118476-85-0Molecular Formula : C30H45N9O5Molecular Weight : 611.75Purity : > 95%Chemical Structure : Tyr-D-Arg-Phe-Lys-NH2Application : The most selective µ-agonist reported to date. DALDA (YrFK-amide) should be useful not only as a research tool in basic opioid pharmacology but also for studying specifically peripheral µ-receptor interactions. Its very polar character should prevent DALDA from crossing the blood-brain barrier to any significant extent.Storage/Stability : Shipped at 4°C. Store at -20°C for one year.