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Heterocyclic building blocks

Dimezone

Also known as 4,4-Dimethyl-1-phenyl-3-pyrazolidone, 4,4-Dimethylphenidone, 4,4-Dimethyl-1-phenyl-3-pyrazolidinone

CAS 2654-58-2Formula C11H14N2OMolar mass 190.25 g/molEC 220-181-1
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant 1 supplier listed
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Dimezone chemical structure, C11H14N2O, CAS 2654-58-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2654-58-2
Formula
C11H14N2O
Molar mass
190.25 g/mol
EC number
220-181-1
HS code
293319
Category
Heterocyclic building blocks

What is Dimezone?

Plain description, key identifiers and synonyms

Dimezone is a chemical substance with the molecular formula C11H14N2O and a molar mass of 190.25 g/mol. Its CAS registry number is 2654-58-2. The IUPAC name is 4,4-dimethyl-1-phenylpyrazolidin-3-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4,4-dimethyl-1-phenylpyrazolidin-3-one
CAS number
2654-58-2 CAS number cross-checked
EC number
220-181-1
Molecular formula
C11H14N2O
UNII
I86O3K6LPN
InChIKey
SJSJAWHHGDPBOC-UHFFFAOYSA-N
InChI
InChI=1S/C11H14N2O/c1-11(2)8-13(12-10(11)14)9-6-4-3-5-7-9/h3-7H,8H2,1-2H3,(H,12,14)
SMILES (canonical and isomeric)
CC1(CN(NC1=O)C2=CC=CC=C2)C

Synonyms

  • 4,4-Dimethyl-1-phenyl-3-pyrazolidone
  • 4,4-Dimethylphenidone
  • 4,4-Dimethyl-1-phenyl-3-pyrazolidinone
  • 3-Pyrazolidinone, 4,4-dimethyl-1-phenyl-
  • 1-Phenyl-4,4-dimethyl-3-pyrazolidone
  • 1-phenyl-4,4-dimethyl-3-pyrazolidinone
  • 4,4-dimethyl-1-phenylpyrazolidin-3-one
  • 3-Pyrazolidinone,4-dimethyl-1-phenyl-
  • 1-Phenyl-4,4-dimethylpyrazolidin-3-on

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
190.25 g/molcalc.
Exact mass
190.1106 Dacalc.
LogP (octanol/water)
1.56calc.
Topological polar surface area
32.34 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
14calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.36calc.
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=C1CCN(c2ccccc2)N1

O=C1CCN(c2ccccc2)N1

2 rings, 12 atoms, the Phenidone ring system.

67 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H300Fatal if swallowed.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (21)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • 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).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash 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

Dimezone suppliers

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Where suppliers are based

1 supplier in 1 country

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Dimezone 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 Dimezone is traded under.

HS 2933.19Indicative HS code

Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the…

World exports in 2024
$3.44B
−22.6% vs 2023, imports $6.66B
2019 to 2024
Top exporters
  1. China21.6%
  2. Switzerland * partner reported20.5%
  3. Germany19.0%
Top importers
  1. Slovenia38.4%
  2. Portugal14.1%
  3. Brazil13.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Dimezone?

Dimezone is a chemical substance with the molecular formula C11H14N2O and a molar mass of 190.25 g/mol. Its CAS registry number is 2654-58-2. The IUPAC name is 4,4-dimethyl-1-phenylpyrazolidin-3-one.

What is the CAS number of Dimezone?

The CAS registry number of Dimezone is 2654-58-2.

What is the molecular formula and weight of Dimezone?

The molecular formula of Dimezone is C11H14N2O and its molar mass is 190.25 g/mol.

What is Dimezone used for?

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

Is Dimezone hazardous?

Dimezone carries the GHS signal word "Danger". Main hazards: fatal if swallowed, causes skin irritation, may cause an allergic skin reaction. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dimezone?

Dimezone is usually classified under HS code 293319 (Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dimezone?

CompoundList lists 1 supplier of Dimezone 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 Dimezone?

Suppliers quote Dimezone 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

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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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