cyclic acid anhydrides (cyclic anhydrides)
derived by loss of water between two oxoacid functions
≠ 0) (carboxylic, sulfonic, etc.) in the same molecule so as to close a ring. Oxo
oxygen replacement analogues are included, e.g.
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1329