sentence: Aldehydes are common in organic chemistry.
sentences_before: The group without the side chain is called the 'aldehyde group' or 'formyl group'. Aldehydes are different from ketones because the formyl group is at the end of the molecule in an aldehyde. Ketones have the formyl group in the middle of the molecule.
concept_name: aldehyde
headings: Aldehyde
categories: Organic compounds Functional groups