Functional Groups Functional Groups with a Carbon-Oxygen Double Bond (Carbonyl Groups) Present in organic compounds and in biological molecules 。 Aldehydes Ketones 。 Carboxylic acids Esters Thioesters Aldehyde Ketone Carboxylic acid Ester Amides Acid chlorides Cs-C Thioester Amide Acid chloride Functional Groups with a Carbon-Oxygen Double Bond (Carbonyl Groups) Present in organic compounds and in biological molecules • Aldehydes • Ketones • Carboxylic acids • Esters • Thioesters • Amides • Acid chlorides Functional Groups