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Introduction Ketones are a major class of organic compounds containing a carbonyl group. They are widely used in industrial processes, pharmaceuticals. and biological systems They are found in sugars, hormones, and natural products. General Formula& &&&Nomenclature Types of Ketones 1) Aliphatic Ketones Contain open carbon chains (non-aromatic) General formula: R-CO-R' (R, R' alkyl groups) Examples: CHICOCH Propanone (Acetone) CHCOCH Butanone