Find the word definition

Wiktionary
trifluoromethanesulfonyl azide

n. (context organic chemistry English) An organic azide used as a reagent in organic synthesis, usually prepared by reacting trifluoromethanesulfonic anhydride with sodium azide.

Wikipedia
Trifluoromethanesulfonyl azide

Trifluoromethanesulfonyl azide or triflyl azide is an organic azide used as a reagent in organic synthesis.