https://doi.org/10.1351/goldbook.A00123
Groups formed by removing one or more hydroxy groups from @O04374@ that have the general structure RkE(=O)l(OH)m (l ≠ 0), and replacement analogues of such acyl groups. In organic chemistry an unspecified acyl group is commonly a carboxylic acyl group. E.g.
A00123.png