Molecular Formula: C76H104N18O19S2 Molecular Weight: 1637.88 CAS No.: 38916-34-6 SPECIFICATIONS: 1 .Appearance: White powder 2 .Specific Optical Rotation ( c= 1, 1% HAc) : -37.0~ -47.0° 3 .Water Content( Karl Fischer) : d5.0% 4 .Acetate Content( by HPLC) : d15.0% 5 .Amino Acid Composition: ± 10% of theoretical 6 .Purity ( by HPLC) : e98.0% 7 .Single Impurity( by HPLC) : d1.0% 8 .Peptide Content( by N% ) : e80.0% 9 .Assay( By Anhydrous, Acetic Acid-free ) : 95.0~ 103.0% 10 .Pyrogens: Conforms Packing: plastic vial( dedicated for peptide packing) or glass vial, quantity according to customer' s detail requirement. Storage a cool( 2~ 8 ) & dry place protected from light, keep package close when not in use.