noun
Technical term in organic chemistry referring to the hexagonal ring structure of benzene.
ベンゼン核は芳香族化合物の基本構造です。
The benzene ring is the fundamental structure of aromatic compounds.
ベンゼン refers to the chemical compound benzene itself, while ベンゼン核 specifically denotes its ring structure.
Compound of ベンゼン (benzene) and 核 (nucleus, core), a direct calque of English 'benzene ring'.