According to IUPAC alphabetical ordering rules for substituents, which of the following prefixes is — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

Hyphenated structural prefixes (sec-, tert-) and simple numerical multipliers (di, tri, tetra) are ignored for alphabetization. However, prefixes written as a continuous part of the group name without hyphens (iso, neo, cyclo) ARE considered.