Ketonic parent @S06088@ (polyhydroxyketones H–[CHOH]n–C(=O)[CHOH]m–H with three or more carbon atoms) and their @I03130@ @H02774@. The oxo group is usually at C-2. E.g. d-fructose:
Sources: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1346 [Terms] [Paper] White Book, 2nd ed., p. 129 [Terms] [Book]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.