This book is come into existence by kipping in mind of group of chemistry people. However it was more concentrate to green chemistry regarding synthesis and its characterizations by various technique like IR, 1H-NMR,13C analysis, Mass analysis. This book is guiding material for those who want to enhance synthetic efficiency of drug molecule and synthesized compounds. It is even useful in providing good referencing material to graduates and post graduates student for their dissertations and project work worldwide.