Groups formed by removing one or more hydroxy groups from oxoacids
that have the general structure
(l ≠ 0), and replacement analogues of such acyl groups. In organic chemistry an unspecified
acyl group is commonly a carboxylic acyl group. E.g.
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1311