Syn-anti isomerism in organic chemistry is a type of geometrical isomerism.
The prefixes “syn” or “anti” are used to denote geometrical
isomers.
We have discussed geometrical isomerism in previous articles.1 Preferably, syn /anti notations are used for nomenclature of oximes that is aldoxime and ketoxime. Meaning of the word syn is “together” or “with”. And meaning of the word anti is “opposite”.