Diazirines are a class of organic molecules consisting of a carbon bound to two nitrogen atoms, which are double-bonded to each other, forming a cyclopropene-like ring. They are mainly used as carbene precursor and also in photoaffinity labelling studies of nucleic acids and proteins.
Valence Isomerization between Diazo Compounds and Diazirines, S.M. Korneev, Eur. J. Org. Chem., 2011, 31, 6153–6175, DOI: 10.1002/ejoc.201100224
^Photoactivatable Reagents Based on Aryl(trifluoromethyl)diazirines: Synthesis and Application for Studying Nucleic Acid–Protein Interactions; G. A. Korshunova, N. V. Sumbatyan, A. N. Topin, and M. T. Mtchedlidze, Molecular Biology, 2000, 34, 823-839. doi:10.1023/A:1026671624793