A prefix which indicates a shift by one position of all single and double bonds in
a conjugated polyene system. It has been applied only to
carotenoids and
retinoids, e.g.
retro-carotenoids, retro-retinoids.
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1363