For an unsymmetrical ketoxime, the 'Syn' and 'Anti' prefixes are assigned based on a highly specific — Isomerism and Stereochemistry Chemistry Question

💡 Solution & Explanation

Unsymmetrical ketoximes possess two distinct alkyl groups attached to the central carbon. The IUPAC naming convention assigns 'syn' and 'anti' specifically relative to the alphabetically preferred alkyl group. If the nitrogen's $-OH$ group lies on the same spatial side as the alphabetically prior alkyl group, the isomer is named 'syn'.