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Hydrocarbons

alpha-Thujene

Also known as Origanene, Bicyclo[3.1.0]hex-2-ene, 2-methyl-5-(1-methylethyl)-, 2-methyl-5-propan-2-ylbicyclo[3.1.0]hex-2-ene

CAS 2867-05-2Formula C10H16Molar mass 136.24 g/molEC 220-686-7
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Serious health hazard, Hazardous to the environment 2 suppliers listed
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alpha-Thujene chemical structure, C10H16, CAS 2867-05-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2867-05-2
Formula
C10H16
Molar mass
136.24 g/mol
Physical form
Liquid
HS code
290219
Category
Hydrocarbons
Illustrative photo, closed blue steel drums of liquid in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is alpha-Thujene?

Plain description, key identifiers and synonyms

Alpha-thujene is a thujene that has a bicyclo[3.1.0]hex-2-ene skeleton which is substituted at positions 2 and 5 by methyl and isopropyl groups, respectively.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methyl-5-propan-2-ylbicyclo[3.1.0]hex-2-ene
CAS number
2867-05-2 CAS number cross-checkedOther or deprecated CAS: 3917-48-4
EC number
220-686-7
Molecular formula
C10H16
InChIKey
KQAZVFVOEIRWHN-UHFFFAOYSA-N
InChI
InChI=1S/C10H16/c1-7(2)10-5-4-8(3)9(10)6-10/h4,7,9H,5-6H2,1-3H3
SMILES (canonical and isomeric)
CC1=CCC2(C1C2)C(C)C

Synonyms

  • Origanene
  • Bicyclo[3.1.0]hex-2-ene, 2-methyl-5-(1-methylethyl)-
  • 2-methyl-5-propan-2-ylbicyclo[3.1.0]hex-2-ene
  • 2-methyl-5-propan-2-ylbicyclo(3.1.0)hex-2-ene
  • Bicyclo(3.1.0)hex-2-ene, 2-methyl-5-(1-methylethyl)-
  • alpha-Thujene, (a+-)-
  • 3-Thujene
  • 2-methyl-5-(propan-2-yl)bicyclo[3.1.0]hex-2-ene
  • 5-Isopropyl-2-methylbicyclo[3.1.0]hex-2-ene
  • thujiene
  • 2-methyl-5-(1-methylethyl)-bicyclo[3.1.0]hex-2-ene
  • 2-Methyl-5-(1-methylethyl)-bicyclo(3.1.0)hex-2-ene
  • alpha-thujanol
  • alpha-Thuiene
  • alpha-Thujen
  • thuj-3-ene
  • thujene (alpha-)
  • 4-methyl-1-propan-2-ylbicyclo[3.1.0]hex-3-ene
  • Thujene, alpha-
  • (-)-3-Thujene
  • (1R,5S)-thuj-2-ene
  • (1R)-(-)-thuj-3-ene
  • Thujone, (a + b)(sg)
  • 5-Isopropyl-2-methylbicyclo[3.1.0]hex-2-ene #
  • bicyclo[3.1.0]hex-2-ene, 4-methyl-1-propan-2-yl
Show all 27 synonyms
  • [3.1.0]hex-2-ene,2-methyl-5-(1-methylethyl)-bicyclo
  • bicyclo[3.1.0]hex-2-ene,2-methyl-5-(1-methylethyl)-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
136.24 g/molcalc.
Exact mass
136.1252 Dacalc.
LogP (octanol/water)
3calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
10calc.
Rings
2calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.8calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1=CC2CC2C1

C1=CC2CC2C1

2 rings, 6 atoms, the Bicyclo(3.1.0)hex-2-ene ring system.

48 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H226Flammable liquid and vapour.
  • H302Harmful if swallowed.
  • H304May be fatal if swallowed and enters airways.
  • H317May cause an allergic skin reaction.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (26)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P331Do not induce vomiting.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

alpha-Thujene suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 1 country

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alpha-Thujene price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code alpha-Thujene is traded under.

HS 2902.19Indicative HS code

Cyclanes, cyclenes and cycloterpenes, other

World exports in 2024
$979M
+24.3% vs 2023, imports $1B
2019 to 2024
Top exporters
  1. China23.4%
  2. United States20.6%
  3. Germany13.6%
Top importers
  1. India * partner reported9.9%
  2. United States9.8%
  3. South Korea9.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for alpha-Thujene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about alpha-Thujene, based on the data on this page

What is alpha-Thujene?

Alpha-thujene is a thujene that has a bicyclo[3.1.0]hex-2-ene skeleton which is substituted at positions 2 and 5 by methyl and isopropyl groups, respectively.

What is the CAS number of alpha-Thujene?

The CAS registry number of alpha-Thujene is 2867-05-2. Other or deprecated CAS numbers: 3917-48-4.

What is the molecular formula and weight of alpha-Thujene?

The molecular formula of alpha-Thujene is C10H16 and its molar mass is 136.24 g/mol.

What is alpha-Thujene used for?

Known uses and roles of alpha-Thujene include building blocks in research and laboratory.

Is alpha-Thujene hazardous?

alpha-Thujene carries the GHS signal word "Danger". Main hazards: flammable liquid and vapour, harmful if swallowed, may be fatal if swallowed and enters airways. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of alpha-Thujene?

alpha-Thujene is usually classified under HS code 290219 (Cyclanes, cyclenes and cycloterpenes, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy alpha-Thujene?

CompoundList lists 2 suppliers of alpha-Thujene in India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy alpha-Thujene in India?

2 suppliers in India list alpha-Thujene on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of alpha-Thujene?

Suppliers quote alpha-Thujene on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle alpha-Thujene

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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