This is a contribution to the knowledge about constituents in different medicinal plants in Pakistan,In addition to the structure elucidation of plant ingredients from Galinsoga parviflora this book deals with the antioxidant and enzyme inhibitory properties of isolated compounds.The investigations carried out on these specimen of the region along with synthetic compounds by the author are a valuable step towards the understanding of this class of natural compounds for the first time. The application of classic analytical techniques as well as the highly sophisticated methods like NMR, mass spectroscopy,Enzyme inhibitory assays and determination of kinetic parameters for the prediction of type of inhibition are logical and in accordance for the suitable investigation in the field of natural/synthetic chemistry, Biochemistry and pharmaceutics.