Use of medicinal plants to cure a number of disease has always attracted the attention of chemists, biologists and doctors. Although field has been investigated for a long, but it gained momentum in last few decades only and that too, with the development of refined separation methods and newer spectroscopic techniques. The importance of natural products was felt and a anumber of universities have made it a part of their curriculum. Search of different Natural Products i.e. extraction, isolation and characterisation is tough and time consuming. The students face a lot of problem in finding the material at one place. The present book has been designed in such a way so as to make it student-friendly. Chemistry of varities of natural products has been discussed ranging from terpenoids, steroids, alkaloids, pigments, prostaglandins, pyrethrins, rotenones, etc.