-al

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title: "-al" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["chemistry-suffixes"] description: "Suffix used in organic chemistry" topic_path: "science/chemistry" source: "https://en.wikipedia.org/wiki/-al" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Suffix used in organic chemistry ::

In chemistry, the suffix -al is the IUPAC nomenclature used in organic chemistry to form names of aldehydes containing the -(CO)H group in the systematic form. It was extracted from the word "aldehyde". With the exception of chemical compounds having a higher priority than it, all aldehydes are named using -al, such as 'propanal'. Some aldehydes also have common names, such as formaldehyde for methanal, acetaldehyde for ethanal. Benzaldehyde does not have a systematic form with -al.

References

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