CompoundList
Sign in
Hydrocarbons

Cyclobutene

Also known as 1-Cyclobutene, cyclobut-1-ene, 1-Cyclobutene #

CAS 822-35-5Formula C4H6Molar mass 54.09 g/molEC 212-496-8
GHS signal word: Danger. Pictograms: Flammable, Serious health hazard 1 supplier listed
Get quotes See the supplier
Cyclobutene chemical structure, C4H6, CAS 822-35-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
822-35-5
Formula
C4H6
Molar mass
54.09 g/mol
Physical form
Gas
HS code
290219
Category
Hydrocarbons
Illustrative photo, a bundle of gas cylinders on a manifold in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Cyclobutene?

Plain description, key identifiers and synonyms

Cyclobutene is a cycloalkene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cyclobutene
CAS number
822-35-5 CAS number cross-checked
EC number
212-496-8
Molecular formula
C4H6
InChIKey
CFBGXYDUODCMNS-UHFFFAOYSA-N
InChI
InChI=1S/C4H6/c1-2-4-3-1/h1-2H,3-4H2
SMILES (canonical and isomeric)
C1CC=C1

Synonyms

  • 1-Cyclobutene
  • cyclobut-1-ene
  • 1-Cyclobutene #

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
Gasexp.

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
54.09 g/molcalc.
Exact mass
54.047 Dacalc.
LogP (octanol/water)
1.34calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
4calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
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=CCC1

C1=CCC1

1 ring, 4 atoms. This chemical is the scaffold itself.

205 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H224Extremely flammable liquid and vapour.
  • H341Suspected of causing genetic defects.
  • H351Suspected of causing cancer.
  • H373May cause damage to organs through prolonged or repeated exposure.
Precautionary statements (16)
  • P203Obtain, read and follow all safety instructions before use.
  • 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.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • 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.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • 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

Cyclobutene suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

See the supplier
  • EvitaChem
    China, BeijingUnclaimed profile
    CyclobuteneGrade, purity and minimum order on request
    Price on request
    View

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

1 supplier in 1 country

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Cyclobutene price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cyclobutene 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 Cyclobutene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Cyclobutene, based on the data on this page

What is Cyclobutene?

Cyclobutene is a cycloalkene.

What is the CAS number of Cyclobutene?

The CAS registry number of Cyclobutene is 822-35-5.

What is the molecular formula and weight of Cyclobutene?

The molecular formula of Cyclobutene is C4H6 and its molar mass is 54.09 g/mol.

Is Cyclobutene hazardous?

Cyclobutene carries the GHS signal word "Danger". Main hazards: extremely flammable liquid and vapour, suspected of causing genetic defects, suspected of causing cancer. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cyclobutene?

Cyclobutene 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 Cyclobutene?

CompoundList lists 1 supplier of Cyclobutene in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Cyclobutene?

Suppliers quote Cyclobutene 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 Cyclobutene

Get quotes for Cyclobutene

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Cyclobutene
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Cyclobutene with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/cyclobutene-822-35-5" title="Cyclobutene structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Hydrocarbons or HS code 290219

1 supplier
Free quotes, contact stays private
Get quotes