Polymerization inhibitor 701 can be used as a spin marker for the study of biological compounds and polymers; 

Spin labeling reagent for identification of antagonist and agonist binding sites of NK1 receptor

determine the generation of reactive oxygen species in myocardium by electron spin resonance spectroscopy; 

as a fluorine-labeled TEMPO derivative that can be prepared by derivatization of TEMPO propynyl ether and subsequent "click" reaction with fluoride azide; 

It is used as a highly efficient catalyst in the reaction of oxidizing alcohols with bleach.