Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D006576
http://purl.bioontology.org/ontology/MESH/D006576
Preferred Name

Heterocyclic Compounds, 4 or More Rings

Definitions
A class of heterocyclic compounds that include four or more fused rings. Both aromatic or non-aromatic ring structures are included in this category.
Synonyms
Heterocyclic Compounds, 4-Ring
Five Ring Heterocyclic Compounds
Heterocyclic Compounds, 4 Ring
4-Ring Heterocyclic Compounds
Heterocyclic Compounds, 5 Ring
Heterocyclic Compounds, 5-Ring
Fused Heterocyclic Compounds, Four Ring
5-Ring Heterocyclic Compounds
Heterocyclic Cpds, 4 or More Rings
Heterocyclic Cpds, 4 Ring
Fused Heterocyclic Compounds, Four-Ring
Fused Heterocyclic Compounds, Five-Ring
Four Ring Heterocyclic Compounds
Heterocyclic Cpds, 5 Ring
Fused Heterocyclic Compounds, Five Ring
Heterocyclic Compounds with 4 or More Rings
Heterocyclic Compounds with Four or More Rings
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Type http://www.w3.org/2002/07/owl#Class
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