Heterocyclic Compounds, 3-Ring. Fused Heterocyclic Compounds, Three-Ring . Heterocyclic Cpds, 3 Ring . Three Ring Heterocyclic Compounds . 3-Ring Heterocyclic Compounds . Fused Heterocyclic Compounds, Three Ring . Heterocyclic Compounds, 3 Ring . A class of heterocyclic compounds that include a three-ring fused structure. Both aromatic or non-aromatic ring structures are included in this category. . 0.50
Azirines. Azacyclopropanes, Unsaturated . Unsaturated Azacyclopropanes . Unsaturated azacyclopropane compounds that are three-membered heterocycles of a nitrogen and two carbon atoms. . 0.50
Hydrocarbons, Acyclic. Acyclic Hydrocarbons . Organic compounds composed exclusively of carbon and hydrogen where no carbon atoms join to form a ring structure. . 0.46
Hydrocarbons, Alicyclic. Alicyclic Hydrocarbons . Organic compounds composed exclusively of carbon and hydrogen. Three or more carbon atoms are arranged in a cyclic structure and they possess aliphatic properties. . 0.43