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Chemical substance record

(-)-menthol

2216-51-5C10H20O156.269 g/mol

A p-menthan-3-ol which has (1R,2S,5R)-stereochemistry. It is the most common naturally occurring enantiomer. — ChEBI

Safety references

Safety documents & references

1 indexed references
JP · NITE

Government GHS classification

25A0092 · FY2013

View classification

Find a product-specific SDS

Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.

Identity & molecular properties

Source-linked values
CAS number2216-51-5ChEBI ↗
Molecular formulaC10H20OChEBI ↗
Molar mass156.269 g/molChEBI ↗
Monoisotopic mass156.15142 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:15409ChEBI ↗

Cross-source molecular data

PubChem
Molar mass156.26 g/molPubChem ↗
Exact mass156.151415257 DaPubChem ↗
Computed XLogP3PubChem ↗
Topological polar surface area (Ų)20.2PubChem ↗
H-bond donors1PubChem ↗
H-bond acceptors1PubChem ↗
Rotatable bonds1PubChem ↗

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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(-)-menthol
(1R,2S,5R)-5-methyl-2-(propan-2-yl)cyclohexan-1-ol
NOOLISFMXDJSKH-KXUCPTDWSA-N
CC(C)[C@@H]1CC[C@@H](C)C[C@H]1O
InChI=1S/C10H20O/c1-7(2)9-5-4-8(3)6-10(9)11/h7-11H,4-6H2,1-3H3/t8-,9+,10-/m1/s1

Names & synonyms

(1R,2S,5R)-5-methyl-2-(propan-2-yl)cyclohexan-1-ollevomenthollevomentholumlevomentol

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

Classification & relationships

ChEBI ontology

Roles recorded in ChEBI

antitussiveantispasmodic drugantipruritic drug

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

Safety classification · Japan

NITE / Japanese government
Japan · FY2013 source classification
(1R,2S,5R)-2-Isopropyl-5-methylcyclohexan-1-ol · 25A0092
EndpointReported classification
Skin corrosion/irritationCategory 2
Serious eye damage/eye irritationCategory 2B
Specific target organ toxicity - Single exposureCategory 3 (Narcotic effects)
Hazardous to the aquatic environment (Acute)Category 3

Selected source-reported endpoints. Other endpoints, rationales and conditions remain in the original classification. Missing or unlisted information does not mean non-hazardous. This is not a global classification or transport decision.

Read the original NITE classification

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.00639922 mol

Uses 156.269 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
76.86%
H
Hydrogen · 20 atoms
12.90%
O
Oxygen · 1 atom
10.24%

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
Menthol: a refreshing look at this ancient compound. ↗Journal of the American Academy of Dermatology · 2007 Nov · PMID 17498839
CN101602651 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
US2011313205 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.

Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:15409

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

NCBI PubChem · CID 16666 · 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.