Molecular Formula: C30H49N9O9 Molecular Weight: 679.8 CAS No.: 69558-55-0 Sequence: Arg-Lys-Asp-Val-Tyr-OH SPECIFICATIONS: 1 .Appearance : White powder 2 .Specific Optical Rotation ( c= 2, H2O) : -16.0~ -20.0° 3 .pH : 7.0~ 9.0 4 .Water Content( K.F.) : d5.0% 5 .Acetate Content( By HPLC) : d0.2% 6 .Amino Acid Composition : ± 10% of theoretical 7 .Purity( By HPLC) : e98.5% 8 .Single Impurity( By HPLC) : d1.0% 9 .Assay( By Anhydrous) : e98.0% 10 .Bacterial Endotoxins : d5EU/ mg Packing: plastic vial( dedicated for peptide packing) or glass vial, quantity according to customer' s detail requirement. Storage a cool( d20 ) & dry place protected from light, keep package close when not in use.