Description: Peptide to Eosinophilotactic Tetrapeptides Form: Lyophilized powder CAS Number : 61756-28-3Molecular Formula : C13H22N4O8Molecular Weight : 362.34Purity : > 95%Chemical Structure : Ala-Gly-Ser-GluStorage/Stability : Shipped at 4°C. Store at -20°C for one year.