Heterocyclic Cpds,3 Ring

《英文msh詞典》Heterocyclic Cpds,3 Ring
[入口詞] Heterocyclic Cpds,3 Ring
[主題詞] Heterocyclic Compounds,3-Ring
[英文釋義] A class of organic compounds containing three ring structures,one of which is made up of more than one kind of atom,usually carbon plus another atom. The heterocycle may be either aromatic or nonaromatic