Bridged Bicyclo Compounds, Heterocyclic

**Definition:** Heterocyclic compounds that contain two rings that share two non-adjacent atoms in common.

**Tree numbers:** - D03.605.084

**Synonyms:** - Bicyclic Heterocyclic Compounds - Heterocyclic Cpds, Bicyclic - Heterocyclic Bicyclo Compounds - Bicyclo Compounds, Heterocyclic