Specification: 1mg/vialPurity: 98%minAppearance: White powderSpecific Optical Rotation (c=0.5,10% HAc) :-50.0~-60.0°Water Content(Karl Fischer): â¤5.0%Acetate Content(by HPLC): â¤15.0%Amino Acid Composition: ±10% of theoreticalPurity (by HPLC) :â¥98.0%Single Impurity(by HPLC): â¤1.0%Peptide Content(by %N): â¥80%Assay(By Anhydrous, Acetic Acid-free ): 95.0~105.0%Bacterial Endorc;¤5EU/mgStorage/Stability: Stored at -20 °C if preferred. Storage in frost-free freezers is not recommended.