CompoundList
Sign in
Aldehydes and ketones

Dimedone

Also known as 5,5-Dimethyl-1,3-cyclohexanedione, Methone, Cyclomethone

CAS 126-81-8Formula C8H12O2Molar mass 140.18 g/molEC 204-804-4
GHS signal word: Warning. Pictograms: Harmful or irritant 32 suppliers listed
Get quotes Compare 32 suppliers
Dimedone chemical structure, C8H12O2, CAS 126-81-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
126-81-8
Formula
C8H12O2
Molar mass
140.18 g/mol
EC number
204-804-4
HS code
291429
Category
Aldehydes and ketones

What is Dimedone?

Plain description, key identifiers and synonyms

Dimedone is a chemical substance with the molecular formula C8H12O2 and a molar mass of 140.18 g/mol. Its CAS registry number is 126-81-8. The IUPAC name is 5,5-dimethylcyclohexane-1,3-dione.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5,5-dimethylcyclohexane-1,3-dione
CAS number
126-81-8 CAS number cross-checked
EC number
204-804-4
Molecular formula
C8H12O2
UNII
B2B5DSX2FC
MDL number
MFCD00001588
InChIKey
BADXJIPKFRBFOT-UHFFFAOYSA-N
InChI
InChI=1S/C8H12O2/c1-8(2)4-6(9)3-7(10)5-8/h3-5H2,1-2H3
SMILES (canonical and isomeric)
CC1(CC(=O)CC(=O)C1)C

Synonyms

  • 5,5-Dimethyl-1,3-cyclohexanedione
  • Methone
  • Cyclomethone
  • Medon
  • Dimedon
  • 1,3-Cyclohexanedione, 5,5-dimethyl-
  • Methon
  • 1,1-Dimethyl-3,5-diketocyclohexane
  • 1,1-Dimethyl-3,5-cyclohexanedione
  • LU 274
  • 5,5-Dimethylcyclohexane-1,3-dione
  • 5,5-Dimethyldihydroresorcinol
  • 5,5-Dimethylhydroresorcinol
  • Dimethyldihydroresorcinol
  • 5,5-dimethyl-cyclohexane-1,3-dione
  • 5,3-dione
  • 5,5-dimethyl-1,3-cyclohexandion
  • 5,5-Dimethyl-1,3-dihydroresorcinol
  • 1,5-cyclohexanedione
  • 5,3-cyclohexanedione
  • 1,5-diketocyclohexane
  • 1, 5,5-dimethyl-
  • 5,5-Dimethyl-1,3-cyclohexanedione, 95%
  • 5,5-Dimethyl-1,3-cyclohexadione
  • 5,5'-dimethylcyclohexane-1,3-dione
Show all 32 synonyms
  • 5,5-dimethyl-1,3cyclohexanedione
  • 5,5-dimethyl-1,3-cyclohexandione
  • 5,5-dimethylcyclohexan-1,3-dione
  • 5, 5-dimethyl-1,3-cyclohexanedione
  • 5,5-dimethyl-1, 3-cyclohexanedione
  • 2,2 Dimethyl,1,6 cyclohexa dione, dimedone
  • 5,5-Dimethyl-1,3-cyclohexanedione, for HPLC derivatization, for the determination of aldehyde formaldehyde, >=99.0%

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
140.18 g/molcalc.
Exact mass
140.0837 Dacalc.
LogP (octanol/water)
1.33calc.
Topological polar surface area
34.14 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
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, O=C1CCCC(=O)C1

O=C1CCCC(=O)C1

1 ring, 8 atoms, the 1,3-Cyclohexanedione ring system.

291 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

Dimedone suppliers

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

All 32 suppliers
30 of 30 offers

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

32 suppliers in 7 countries

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

Dimedone 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

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 Dimedone is traded under.

HS 2914.29Indicative HS code

Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function, other

World exports in 2024
$1B
+6.6% vs 2023, imports $980M
2019 to 2024
Top exporters
  1. China32.5%
  2. India * partner reported12.9%
  3. Germany12.3%
Top importers
  1. United States15.7%
  2. Japan8.7%
  3. Germany8.7%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Dimedone?

Dimedone is a chemical substance with the molecular formula C8H12O2 and a molar mass of 140.18 g/mol. Its CAS registry number is 126-81-8. The IUPAC name is 5,5-dimethylcyclohexane-1,3-dione.

What is the CAS number of Dimedone?

The CAS registry number of Dimedone is 126-81-8.

What is the molecular formula and weight of Dimedone?

The molecular formula of Dimedone is C8H12O2 and its molar mass is 140.18 g/mol.

What is Dimedone used for?

Known uses and roles of Dimedone include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Dimedone hazardous?

Dimedone carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dimedone?

Dimedone is usually classified under HS code 291429 (Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dimedone?

CompoundList lists 32 suppliers of Dimedone in China, India, United States, Canada and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Dimedone in India?

7 suppliers in India list Dimedone on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Dimedone?

Suppliers quote Dimedone 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 Dimedone

Get quotes for Dimedone

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Dimedone
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 Dimedone 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/dimedone-126-81-8" title="Dimedone 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 Aldehydes and ketones or HS code 291429

32 suppliers
Free quotes, contact stays private
Get quotes