A common carboxylic acid is ethanoic acid ... made of amino acid monomers and are hydrolysed by our bodies. Aldehydes and ketones are compounds with carbonyl groups that play an important role ...

Esters are usually synthesized from an alcohol and an acid, most frequently, a carboxylic acid. In some cases ... esters because vinyl alcohols aren’t stable—they isomerize to aldehydes. Even so, some ...