Structure elucidation is the process of determining the chemical structure of an unknown organic compound. It often involves the use of nuclear magnetic resonance spectroscopy (NMR spectroscopy), mass spectrometry and infrared spectroscopy. NMR spectroscopy plays a very important role in structure elucidation. It can be of various types like proton, carbon, phosphorus- NMR, etc. The organic compounds which have more number of carbon atoms than hydrogen atoms, then C13-NMR is more appropriate compared to H1-NMR. Combination of spectroscopic techniques gives us a better idea about the structure of unknown organic compounds.