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Screening compounds

Ethotoin dimer

Also known as 5,5'-Bihydantoin, 3,3'-diethyl-5,5'-diphenyl-, 1,1'-Diethyl-4,4'-diphenyl(4,4'-biimidazolidine)-2,2',5,5'-tetrone, (4,4'-Biimidazolidine)-2,2',5,5'-tetrone, 1,1'-diethyl-4,4'-diphenyl-

CAS 18749-96-7Formula C22H22N4O4Molar mass 406.44 g/mol
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Ethotoin dimer chemical structure, C22H22N4O4, CAS 18749-96-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
18749-96-7
Formula
C22H22N4O4
Molar mass
406.44 g/mol
HS code
293329
Category
Screening compounds

What is Ethotoin dimer?

Plain description, key identifiers and synonyms

Ethotoin dimer is a chemical substance with the molecular formula C22H22N4O4 and a molar mass of 406.44 g/mol. Its CAS registry number is 18749-96-7. The IUPAC name is 3-ethyl-5-(1-ethyl-2,5-dioxo-4-phenylimidazolidin-4-yl)-5-phenylimidazolidine-2,4-dione.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-ethyl-5-(1-ethyl-2,5-dioxo-4-phenylimidazolidin-4-yl)-5-phenylimidazolidine-2,4-dione
CAS number
18749-96-7
Molecular formula
C22H22N4O4
UNII
SY6VQC8MCZ
InChIKey
IHBCEQSUVDKXRL-UHFFFAOYSA-N
InChI
InChI=1S/C22H22N4O4/c1-3-25-17(27)21(23-19(25)29,15-11-7-5-8-12-15)22(16-13-9-6-10-14-16)18(28)26(4-2)20(30)24-22/h5-14H,3-4H2,1-2H3,(H,23,29)(H,24,30)
SMILES (canonical and isomeric)
CCN1C(=O)C(NC1=O)(C2=CC=CC=C2)C3(C(=O)N(C(=O)N3)CC)C4=CC=CC=C4

Synonyms

  • 5,5'-Bihydantoin, 3,3'-diethyl-5,5'-diphenyl-
  • 1,1'-Diethyl-4,4'-diphenyl(4,4'-biimidazolidine)-2,2',5,5'-tetrone
  • (4,4'-Biimidazolidine)-2,2',5,5'-tetrone, 1,1'-diethyl-4,4'-diphenyl-

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
406.44 g/molcalc.
Exact mass
406.1641 Dacalc.
LogP (octanol/water)
1.92calc.
Topological polar surface area
98.82 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
5calc.
Heavy atoms
30calc.
Rings
4calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.27calc.
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, O=C1NC(=O)C(c2ccccc2)(C2(c3ccccc3)NC(=O)NC2=O)N1

O=C1NC(=O)C(c2ccccc2)(C2(c3ccccc3)NC(=O)NC2=O)N1

4 rings, 26 atoms, the Diphenylhydantil ring system.

2 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Ethotoin dimer suppliers

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Ethotoin dimer price

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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

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 Ethotoin dimer is traded under.

HS 2933.29Indicative HS code

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

World exports in 2024
$1.43B
−7.6% vs 2023, imports $1.47B
2019 to 2024
Top exporters
  1. China28.1%
  2. France * partner reported12.7%
  3. India * partner reported10.3%
Top importers
  1. United Kingdom13.0%
  2. United States7.9%
  3. China6.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Ethotoin dimer, based on the data on this page

What is Ethotoin dimer?

Ethotoin dimer is a chemical substance with the molecular formula C22H22N4O4 and a molar mass of 406.44 g/mol. Its CAS registry number is 18749-96-7. The IUPAC name is 3-ethyl-5-(1-ethyl-2,5-dioxo-4-phenylimidazolidin-4-yl)-5-phenylimidazolidine-2,4-dione.

What is the CAS number of Ethotoin dimer?

The CAS registry number of Ethotoin dimer is 18749-96-7.

What is the molecular formula and weight of Ethotoin dimer?

The molecular formula of Ethotoin dimer is C22H22N4O4 and its molar mass is 406.44 g/mol.

What is Ethotoin dimer used for?

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

Is Ethotoin dimer hazardous?

No GHS hazard classification for Ethotoin dimer is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Ethotoin dimer?

Ethotoin dimer is usually classified under HS code 293329 (Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Ethotoin dimer?

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What is the price of Ethotoin dimer?

Suppliers quote Ethotoin dimer 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 Ethotoin dimer

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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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