Chemical substance record

Gamma-terpinene

99-85-4C₁₀H₁₆136.238 g/mol

Organic/Inorganic Small MoleculeChEBI source record

One of three isomeric monoterpenes differing in the positions of their two double bonds (α- and β-terpinene being the others). In γ-terpinene the double bonds are at the 1- and 4-positions of the p-menthane skeleton. — ChEBI

Safety references

Safety documents & references

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Identity & molecular properties

Source-linked values

CAS number	99-85-4	ChEBI ↗
Molecular formula	C₁₀H₁₆	ChEBI ↗
Molar mass	136.238 g/mol	ChEBI ↗
Monoisotopic mass	136.1252 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:10577	ChEBI ↗

Cross-source molecular data

PubChem

Molar mass	136.23 g/mol	PubChem ↗
Exact mass	136.125200510 Da	PubChem ↗
Computed XLogP	2.8	PubChem ↗
Topological polar surface area (Å²)	0	PubChem ↗
H-bond donors	0	PubChem ↗
H-bond acceptors	0	PubChem ↗
Rotatable bonds	1	PubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

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Source preferred name

gamma-terpinene

IUPAC name

1-methyl-4-(propan-2-yl)cyclohexa-1,4-diene

InChIKey

YKFLAYDHMOASIY-UHFFFAOYSA-N

SMILES

CC1=CCC(C(C)C)=CC1

InChI

InChI=1S/C10H16/c1-8(2)10-6-4-9(3)5-7-10/h4,7-8H,5-6H2,1-3H3

Names & synonyms

1-methyl-4-(propan-2-yl)cyclohexa-1,4-diene

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

monoterpeneChEBI parent class · 35187 ↗cyclohexadieneChEBI parent class · 37613 ↗

lipid hydrocarbon organic molecular entity

Roles recorded in ChEBI

antioxidantvolatile oil componentplant metabolitehuman xenobiotic metabolite

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass

Amount

Input unit

Equivalent amount

0.0073401 mol

Uses 136.238 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions

C

Carbon · 10 atoms

88.16%

H

Hydrogen · 16 atoms

11.84%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations

Mechanism of inhibition of lipid peroxidation by gamma-terpinene, an unusual and potentially useful hydrocarbon antioxidant. ↗Journal of agricultural and food chemistry · 2003 Apr 23 · PMID 12696969

Volatile organic compounds from feces and their potential for diagnosis of gastrointestinal disease. ↗FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2007 Jun · PMID 17314143

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Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:10577

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

Additional molecular descriptorsNCBI PubChem · CID 7461 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.

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