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Aromatic building blocks

4-Phenylchalcone

Also known as (E)-1-phenyl-3-(4-phenylphenyl)prop-2-en-1-one, 3-[1,1'-Biphenyl]-4-yl-1-phenyl-2-propen-1-one, 3-(biphenyl-4-yl)-1-phenylprop-2-en-1-one

CAS 2403-28-3Formula C21H16OMolar mass 284.36 g/mol
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4-Phenylchalcone chemical structure, C21H16O, CAS 2403-28-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2403-28-3
Formula
C21H16O
Molar mass
284.36 g/mol
HS code
291439
Category
Aromatic building blocks

What is 4-Phenylchalcone?

Plain description, key identifiers and synonyms

4-Phenylchalcone is a chemical substance with the molecular formula C21H16O and a molar mass of 284.36 g/mol. Its CAS registry number is 2403-28-3. The IUPAC name is (E)-1-phenyl-3-(4-phenylphenyl)prop-2-en-1-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-1-phenyl-3-(4-phenylphenyl)prop-2-en-1-one
CAS number
2403-28-3 CAS number cross-checked
Molecular formula
C21H16O
UNII
R26VMU2SZ3
InChIKey
WUPSFOFYQONBKI-DTQAZKPQSA-N
InChI
InChI=1S/C21H16O/c22-21(20-9-5-2-6-10-20)16-13-17-11-14-19(15-12-17)18-7-3-1-4-8-18/h1-16H/b16-13+
SMILES
C1=CC=C(C=C1)C2=CC=C(C=C2)/C=C/C(=O)C3=CC=CC=C3

Synonyms

  • (E)-1-phenyl-3-(4-phenylphenyl)prop-2-en-1-one
  • 3-[1,1'-Biphenyl]-4-yl-1-phenyl-2-propen-1-one
  • 3-(biphenyl-4-yl)-1-phenylprop-2-en-1-one
  • Chalcone, 4-phenyl-
  • trans-4-Phenylchalcone
  • 2-Propen-1-one, 3-[1,1'-biphenyl]-4-yl-1-phenyl-
  • (2E)-3-(Biphenyl-4-yl)-1-phenylprop-2-en-1-one

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
284.36 g/molcalc.
Exact mass
284.1201 Dacalc.
LogP (octanol/water)
5.25calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
4calc.
Heavy atoms
22calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)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=C(C=Cc1ccc(-c2ccccc2)cc1)c1ccccc1

O=C(C=Cc1ccc(-c2ccccc2)cc1)c1ccccc1

3 rings, 22 atoms.

10 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.

4-Phenylchalcone suppliers

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4-Phenylchalcone 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

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 4-Phenylchalcone is traded under.

HS 2914.39Indicative HS code

Aromatic ketones without other oxygen function, other

World exports in 2024
$207M
−12.1% vs 2023, imports $191M
2019 to 2024
Top exporters
  1. China61.4%
  2. India * partner reported12.4%
  3. Italy7.6%
Top importers
  1. India * partner reported11.9%
  2. Germany9.9%
  3. United States8.7%

* Partner reported figures, a lower bound.

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

The HS code shown for 4-Phenylchalcone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 4-Phenylchalcone, based on the data on this page

What is 4-Phenylchalcone?

4-Phenylchalcone is a chemical substance with the molecular formula C21H16O and a molar mass of 284.36 g/mol. Its CAS registry number is 2403-28-3. The IUPAC name is (E)-1-phenyl-3-(4-phenylphenyl)prop-2-en-1-one.

What is the CAS number of 4-Phenylchalcone?

The CAS registry number of 4-Phenylchalcone is 2403-28-3.

What is the molecular formula and weight of 4-Phenylchalcone?

The molecular formula of 4-Phenylchalcone is C21H16O and its molar mass is 284.36 g/mol.

What is 4-Phenylchalcone used for?

Known uses and roles of 4-Phenylchalcone include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 4-Phenylchalcone hazardous?

No GHS hazard classification for 4-Phenylchalcone 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 4-Phenylchalcone?

4-Phenylchalcone is usually classified under HS code 291439 (Aromatic ketones without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 4-Phenylchalcone?

Post a free request on CompoundList and suppliers of 4-Phenylchalcone will send you quotes. Your contact details stay private until you accept a quote.

What is the price of 4-Phenylchalcone?

Suppliers quote 4-Phenylchalcone 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 4-Phenylchalcone

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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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