Ever since Nuclear Magnetic Resonance (NMR) spectroscopy hit the analytical scene; its capabilities and applications continue to evolve. Originally designed as a way to verify the structure of relatively small compounds, the technology of NMR has exploded and become a valuable means for studying protein structure. NMR has proved to be a valuable tool in pharmaceutical research, as it has entered new arena of drug discovery and structural genomics. NMR can provide information on the

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... onal structures of small molecules in solution, high-molecular-weight complexes, and the details of enzyme mechanisms that can be used to aid in drug design. In the present scenario, the availability of high magnetic fields; improved software, high resolution probes, and electronics; more versatile pulse programmers; and most importantly the development of 2D, 3D and 4D NMR, have revolutionized the field of drug discovery and development.