https://pmc.ncbi.nlm.nih.gov/articles/PMC7517343/
4-Nitrophenyl activated esters are superior synthons for indirect radiofluorination of biomolecules...
A comparative study of PNP- and TFP-activated esters of radiolabelled prosthetic groups demonstrates the superiority of PNP esters in terms of stability and...
nitrophenylactivatedesterssuperiorsynthons