There are several spectroscopic techniques which can be used to identify organic molecules: infrared (IR),
mass spectroscopy (MS) UV/visible spectroscopy (UV/Vis) and nuclear magnetic resonance (NMR).
IR, NMR and UV/vis spectroscopy are based on observing the frequencies of electromagnetic radiation
absorbed and emitted by molecules. MS is based on measuring the mass of the molecule and any
fragmentsof the molecule which may be produced in the MS instrument.