To check if fluoroalkyl aliphatic diazirines could be used as photoaffinity labels, we performed next several standard photolabelling experiments. For that, we synthesized a model compound 30 by N-tosyl protection of trifluoromethyl piperidine 6g (please, see SI; Scheme 4). N-Ts group was specifically chosen so that we could quantitatively analyze the reaction mixtures by LC-MS with UV detection at 254 nm (absorbance of the phenyl ring in the tosyl group).