The Jeol JNM-ECZS 400 MHz NMR allow users to probe many nuclei, such as 1H, 13C, 15N, 31P, and 19F. The response of the nuclei to the magnetic field provides details of the electronic structure of a molecule and its individual functional groups. NMR spectroscopy also provides detailed information about the dynamics, purity, reaction state, and chemical environment of molecules. The Spectrometer is equipped with a 24-seat autosampler to facilitate quick turnaround of data acquisition. It has a highly stable control system which allows analysis at low and high temperatures.