https://doi.org/10.1351/goldbook.K03387
Ketonic parent @[email protected] (polyhydroxyketones H–[CHOH]n–C(=O)[CHOH]m–H with three or more carbon atoms) and their @[email protected] @[email protected] The oxo group is usually at C-2. E.g. d-fructose:
K03387.png