As per my teaching expertise, I have written a textbook “Surface Characterization Techniques: From theory to research”( In this 6 minutes video, detail structure elucidation of Quercitrin, Phetamethylquercetin, Quercetin and Cyanidin chloride is discussed/presented by different chemical test and synthesis of base structures as Quercetin and Cyanidin chloride. Biologically important Cyanin chloride has also brought in discussion. For this video, I want to deliver my special thanks to Yogita Chowdhury who has encouraged me to make video on such an important topic in chemistry as well as in pharmaceutical chemistry.