Identifi­cation of 5-substituted 2-chloropyridines by <sup>13</sup>C NMR spectroscopy
13C NMR spectra of imidacloprid (neonicotinoid) and structurally related 5-substituted 2-chloropyridines have been studied. Attributions of signals for all carbon atoms in these spectra has been performed by HSQS and HMBC procedures. It has been shown that the presence of 5-substituted 2-chloropyridine fragments in molecules of complicated organic com­pounds can be proven without doubt by their 13C NMR spectra.