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Hydrocarbons

Cyclohexene, trimethyl-

Also known as 1,5,5-Trimethylcyclohexene, Cyclohexene, 1,5,5-trimethyl-, Trimethylcyclohexene

CAS 503-46-8Formula C9H16Molar mass 124.23 g/molEC 207-969-0
GHS signal word: Warning. Pictograms: Flammable
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Cyclohexene, trimethyl- chemical structure, C9H16, CAS 503-46-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
503-46-8
Formula
C9H16
Molar mass
124.23 g/mol
Physical form
Liquid
HS code
290219
Category
Hydrocarbons
Illustrative photo, 200 litre steel drums of liquid in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Cyclohexene, trimethyl-?

Plain description, key identifiers and synonyms

Cyclohexene, trimethyl- is a chemical substance with the molecular formula C9H16 and a molar mass of 124.23 g/mol. Its CAS registry number is 503-46-8. The IUPAC name is 1,5,5-trimethylcyclohexene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,5,5-trimethylcyclohexene
CAS number
503-46-8Other or deprecated CAS: 68555-95-3
EC numbers
207-969-0, 271-464-1
Molecular formula
C9H16
InChIKey
CHOOCIQDWNAXQQ-UHFFFAOYSA-N
InChI
InChI=1S/C9H16/c1-8-5-4-6-9(2,3)7-8/h5H,4,6-7H2,1-3H3
SMILES (canonical and isomeric)
CC1=CCCC(C1)(C)C

Synonyms

  • 1,5,5-Trimethylcyclohexene
  • Cyclohexene, 1,5,5-trimethyl-
  • Trimethylcyclohexene
  • 1,5,5-trimethylcyclohex-1-ene
  • 5-Trimethylcyclohexen
  • 2,4,4-trimethylcyclohexene

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
124.23 g/molcalc.
Exact mass
124.1252 Dacalc.
LogP (octanol/water)
3.14calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
9calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.78calc.
Formal charge
0calc.
Stereocentres
0calc.
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=CCCCC1

C1=CCCCC1

1 ring, 6 atoms, the Cyclohexene ring system.

5,167 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable

Hazard statements

  • H226Flammable liquid and vapour.
Precautionary statements (11)
  • 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.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Cyclohexene, trimethyl- suppliers

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Cyclohexene, trimethyl- 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: Active 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 Cyclohexene, trimethyl- 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 Cyclohexene, trimethyl- is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Cyclohexene, trimethyl-, based on the data on this page

What is Cyclohexene, trimethyl-?

Cyclohexene, trimethyl- is a chemical substance with the molecular formula C9H16 and a molar mass of 124.23 g/mol. Its CAS registry number is 503-46-8. The IUPAC name is 1,5,5-trimethylcyclohexene.

What is the CAS number of Cyclohexene, trimethyl-?

The CAS registry number of Cyclohexene, trimethyl- is 503-46-8. Other or deprecated CAS numbers: 68555-95-3.

What is the molecular formula and weight of Cyclohexene, trimethyl-?

The molecular formula of Cyclohexene, trimethyl- is C9H16 and its molar mass is 124.23 g/mol.

What is Cyclohexene, trimethyl- used for?

Known uses and roles of Cyclohexene, trimethyl- include building blocks in research and laboratory.

Is Cyclohexene, trimethyl- hazardous?

Cyclohexene, trimethyl- carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cyclohexene, trimethyl-?

Cyclohexene, trimethyl- 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 Cyclohexene, trimethyl-?

Post a free request on CompoundList and suppliers of Cyclohexene, trimethyl- will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Cyclohexene, trimethyl-?

Suppliers quote Cyclohexene, trimethyl- 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 Cyclohexene, trimethyl-

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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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