Station 4 of 13 · Molecule · the record
α-terpineol
α-Terpineol, C10H18O, is the one constituent of lavender oil the French heritage record names: the growers leave the cut lavender to wilt so that the oil is less rich in it, and so of better quality.
No share is given: the record names the molecule and measures nothing.
The record
Each field carries its evidence: open a chip for the source, the quoted words and the confidence. A field with nothing behind it says so and stays empty.
- Name
- α-terpineol
documented
Alpha-Terpineol
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
confidence A
- CAS
- 98-55-5
documented
98-55-5
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
among the CID’s PubChem synonyms, and PubChem resolves it back to this CID
confidence A
- PubChem CID
- 17100
documented
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
confidence A
- Formula
- C10H18O
documented
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
confidence A
- Molecular weight
- 154.25
documented
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
g/mol, as PubChem states it
confidence A
- IUPAC name
- 2-(4-methylcyclohex-3-en-1-yl)propan-2-ol
documented
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
confidence A
- SMILES
- CC1=CCC(CC1)C(C)(C)O
documented
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
confidence A
- InChIKey
- WUOACPNHFRMFPN-UHFFFAOYSA-N
documented
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
confidence A
- Odour threshold
- 3300 µg/kg in water (orthonasal odour detection threshold in water, determined by the method of Czerny et al. 2008, Eur Food Res Technol 228:265–273, as the database states)
measured
OT-1 · Kreissl J, Mall V, Steinhaus P, Steinhaus M · read 2026-09-30
the racemate; the (S)-isomer 2300 and the (R)-isomer 18000 µg/kg in water (OT-1, the same study). Confidence B: an older entry in the same database gives 1200 µg/kg (isomer not stated)
confidence B
- Descriptors
- floral, citrus-like
documented
α-terpineol | CAS 98-55-5, 7785-53-7, 10482-56-1 | Odor quality: floral, citrus-like
OT-1 · Kreissl J, Mall V, Steinhaus P, Steinhaus M · read 2026-09-30
confidence A
- Volatility class
- not on record
not on record
the simulator’s data (modeled) has no entry for α-terpineol
- Regulation
documented
EU-2023-1545: each record above quotes its entry.
- 3D structure
- PubChem computed 3D conformer · 29 atoms, 29 bonds
modeled
PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)pro · read 2026-09-30
PubChem’s computed 3D conformer (the 3D SDF record): a model, drawn schematically, not an experimental structure
confidence A
- Occurs in
- lavender essential oil (huile essentielle de lavande)
documented · no share
the growers’ practice as the heritage record reports it: pre-wilting lowers α-terpineol in the oil. Named, not measured
confidence B
- lavender essential oil (huile essentielle de lavande)
Sources
- PUBCHEM-17100 · PubChem Compound Summary for CID 17100, Alpha-Terpineol (2-(4-methylcyclohex-3-en-1-yl)propan-2-ol). National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine; live database, read 2026-09-30 through the PUG REST endpoints (no account): https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/alpha-terpineol/cids/JSON · https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/17100/property/MolecularFormula,MolecularWeight,IUPACName,Title,CanonicalSMILES,SMILES,InChIKey/JSON · https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/17100/synonyms/JSON · https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/17100/SDF?record_type=3d; the CAS checked back by https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/98-55-5/cids/JSON. pubchem.ncbi.nlm.nih.gov/compound/17100 · read 2026-09-30 · PubChem data are provided by NCBI (public-domain data; cite PubChem, the asset register molecules row); the computed conformer is PubChem-generated. The raw responses are filed as fetched (the house’s records).
- HV-4 · Rosati-Marzetti C. (anthropologist), “Les pratiques de culture des lavandes dans les Alpes-de-Haute-Provence”, Fiche d’inventaire du patrimoine culturel immatériel, Ministère de la Culture (France), fiche no. 2018_67717_INV_PCI_FRANCE_00418, ARK ark:/67717/nvhdhrrvswvk2ml, submitted 12 December 2018 (fieldwork February–August 2018). www.culture.gouv.fr/Media/Thematiques/Patrimoine… · read 2026-09-30
- OT-1 · Kreissl J, Mall V, Steinhaus P, Steinhaus M. Leibniz-LSB@TUM Odorant Database, Version 1.2. Leibniz Institute for Food Systems Biology at the Technical University of Munich: Freising, Germany, 2022. www.leibniz-lsb.de/en/databases/leibniz-lsbtum-o… · read 2026-09-30 · free of charge; scientific use encouraged with full acknowledgement; systematic download or reproduction needs written permission (its copyright page, read 2026-09-30): single values are cited with their references, the responses are not filed
- EU-2023-1545 · Commission Regulation (EU) 2023/1545 of 26 July 2023 (labelling of fragrance allergens). OJ L 188, 27.7.2023, p. 1. eur-lex.europa.eu/eli/reg/2023/1545/oj · read 2026-09-30 · EU legislation; reuse terms not re-read (UNVERIFIED); quoted
These records are published under CC BY 4.0.
this record as data: /data/molecule/alpha-terpineol.json · version 3 · updated 2026-09-30 · confidence A