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The suffix -al is the IUPAC nomenclature used in organic chemistry to form names of aldehydes containing the -(CO)H group. It was extracted from the word "aldehyde".


  • International Union of Pure and Applied Chemistry, Commission on Nomenclature of Organic Chemistry (1993). Panico, R; Powell, WH; Richer, JC, eds. A guide to IUPAC nomenclature of organic compounds: recommendations 1993. Oxford: Blackwell Scientific Publications. ISBN 0-632-03702-4.