Lidocaine. Figure 1 shows a 90 MHz proton spectrum for lidocaine dissolved in CDCl3. The resonances are all well resolved and the only 1H-1H proton coupling is that linked to the ethyl group.

Figure 1. 50 wt. % methyl linoleate in CDCl3. Lower spectrum is 31 13 single scan H spectrum and upper scan is 1 minute C spectrum. High Quality Spectra.