As many know, however, removing the last traces of chromatography solvent, unreacted starting material, and so on, can be a difficult chore so some Japanese science students have apparently hit on an elegant solution: using the ‘Delete Peak’ option in the JEOL NMR software to remove unwanted peaks. Students are taught to look for certain contaminants – TMS, CHCl3, H2O – as a matter of routine. An NMR spectrum provides important data on what’s in the NMR sample.
