Di-NHS Ester-PEG21

• Product Name: Di-NHS Ester-PEG21
• Catalog Number: AG-2634
• CAS#: 2221948-98-5
• Molecular Formula: C54H96N2O29
• Molecular Weight: 1237.35
• Purity: > 90%*

Our NHS Ester maintains over 95% purity initially but may experience slight degradation over time due to its instability. However, we assure a minimum purity of over 90% upon shipping.