Aldehydes

aldehydes Aldehydes are organic chemicals that con­tain the -CHO (aldehyde) group, a carbonyl group (C=O) that has the carbon and hydrogen atom bound.

They are the result of the oxidation of alcohols and, when further oxidized, form carboxylic acids. Methanal (formaldehyde) and ethanal (acetaldehyde) are common examples.