... : white powder2,Water content (Karl Fischer): ≤8%3,Acetate content (HPLC method): ≤10%4,Amino acid composition: ±10% theoretical value5,Purity ... (by two HPLC methods): ≥98.0%6,Single impurity (by two HPLC methods): ≤1.0%7,Total impurity ... (by two HPLC methods): ≤2%8,Peptide content (Kjeldahl ...