INCI: Tetrapeptide-30 CAS:1036207-61-0 Peptide sequence:H-Pro-Lys-Glu-Lys-OH(PKEK) Formule moléculaire:C22H37N5O8 Masse moléculaire:499.56~500.58 g/mol Apparence:white or off-white lyophilized powder Pureté:≥95% or ≥98% tested by HPLC Solubilité:water soluble Humidité:≤10% Single impurity:≤3% Stable pH range:4.0~7.5 Recommended dosage in finished cosmetic:powder raw material 0.001~0.01%;peptide solution(1000ppm) 2~10% Packing for powder:1g,10g,50g,100g per bottle