Propargyl-PEG1-NHS ester 

• Product Name: Propargyl-PEG1-NHS ester 
• Catalog Number: AAD-5478
• CAS#: 1174157-65-3
• Molecular Formula: C10H11NO5
• Molecular Weight: 225.2
• 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.