Biotin-PEG4-phosphorylamino-inosine is a PEG linker that has terminal a biotin group and a Inosine 5′-monophosphate moiety. Biotin has strong binding affinity with avidin. 5′-monophosphate moiety can be used as a substrate to study the distribution, specificity, and kinetics of inosine-5′-monophosphate dehydrogenase (IMPDH). Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.