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Aromatic building blocks

4'-(Phenylazo)acetophenone

Also known as 4-acetylazobenzene, p-Phenylazoacetophenon, 1-{4-[(E)-Phenyldiazenyl]phenyl}ethan-1-one

CAS 4827-16-1Formula C14H12N2OMolar mass 224.26 g/molEC 661-694-4
GHS signal word: Warning. Pictograms: Harmful or irritant
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4'-(Phenylazo)acetophenone chemical structure, C14H12N2O, CAS 4827-16-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4827-16-1
Formula
C14H12N2O
Molar mass
224.26 g/mol
EC number
661-694-4
HS code
292700
Category
Aromatic building blocks

What is 4'-(Phenylazo)acetophenone?

Plain description, key identifiers and synonyms

4'-(Phenylazo)acetophenone is a chemical substance with the molecular formula C14H12N2O and a molar mass of 224.26 g/mol. Its CAS registry number is 4827-16-1. The IUPAC name is 1-(4-phenyldiazenylphenyl)ethanone.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-(4-phenyldiazenylphenyl)ethanone
CAS number
4827-16-1 CAS number cross-checked
EC number
661-694-4
Molecular formula
C14H12N2O
InChIKey
UYXKSJRBCLSBNE-UHFFFAOYSA-N
InChI
InChI=1S/C14H12N2O/c1-11(17)12-7-9-14(10-8-12)16-15-13-5-3-2-4-6-13/h2-10H,1H3
SMILES (canonical and isomeric)
CC(=O)C1=CC=C(C=C1)N=NC2=CC=CC=C2

Synonyms

  • 4-acetylazobenzene
  • p-Phenylazoacetophenon
  • 1-{4-[(E)-Phenyldiazenyl]phenyl}ethan-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
224.26 g/molcalc.
Exact mass
224.095 Dacalc.
LogP (octanol/water)
4.3calc.
Topological polar surface area
41.79 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
3calc.
Heavy atoms
17calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.07calc.
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, c1ccc(N=Nc2ccccc2)cc1

c1ccc(N=Nc2ccccc2)cc1

2 rings, 14 atoms, the Azobenzene ring system.

3,419 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

  • H317May cause an allergic skin reaction.
Precautionary statements (8)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

4'-(Phenylazo)acetophenone suppliers

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4'-(Phenylazo)acetophenone 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'-(Phenylazo)acetophenone is traded under.

HS 2927.00Indicative HS code

Diazo-, azo- or azoxy compounds

World exports in 2024
$571M
+6.1% vs 2023, imports $525M
2019 to 2024
Top exporters
  1. China47.0%
  2. Indonesia13.1%
  3. Japan9.3%
Top importers
  1. United States10.2%
  2. India * partner reported9.1%
  3. South Korea9.1%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about 4'-(Phenylazo)acetophenone, based on the data on this page

What is 4'-(Phenylazo)acetophenone?

4'-(Phenylazo)acetophenone is a chemical substance with the molecular formula C14H12N2O and a molar mass of 224.26 g/mol. Its CAS registry number is 4827-16-1. The IUPAC name is 1-(4-phenyldiazenylphenyl)ethanone.

What is the CAS number of 4'-(Phenylazo)acetophenone?

The CAS registry number of 4'-(Phenylazo)acetophenone is 4827-16-1.

What is the molecular formula and weight of 4'-(Phenylazo)acetophenone?

The molecular formula of 4'-(Phenylazo)acetophenone is C14H12N2O and its molar mass is 224.26 g/mol.

What is 4'-(Phenylazo)acetophenone used for?

Known uses and roles of 4'-(Phenylazo)acetophenone include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 4'-(Phenylazo)acetophenone hazardous?

4'-(Phenylazo)acetophenone carries the GHS signal word "Warning". Main hazards: 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 4'-(Phenylazo)acetophenone?

4'-(Phenylazo)acetophenone is usually classified under HS code 292700 (Diazo-, azo- or azoxy-compounds). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 4'-(Phenylazo)acetophenone?

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What is the price of 4'-(Phenylazo)acetophenone?

Suppliers quote 4'-(Phenylazo)acetophenone 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'-(Phenylazo)acetophenone

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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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