2,5-Dioxopyrrolidin-1-yl 41-oxo-45-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)-4,7,10,13,16,19,22,25,28,31,34,37-dodecaoxa-40-azapentatetracontanoate(Biotin-PEG12-NHS ester), 98%

*This document is like a lab demo—an example Certificate of Analysis (COA) that showcases what a COA looks like but may not match the latest batch in all its glory. Think of it as a chemistry experiment: close, but not quite the final reaction!