Before revision: Organic chemistry is a subdiscipline within chemistry that scientifically studies the structure , nomenclature, classification, characterization, composition, properties, syntheses, reactions and occurence of organic compounds and organic matter together with hydrocarbons and the derivatives thereof .Clayden, J.; Greeves, N. and Warren, S. (2012) Organic Chemistry.
After revision: Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties , and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms .Clayden, J.; Greeves, N. and Warren, S. (2012) Organic Chemistry.