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Aldehydes and ketones

alpha-Ethylcinnamaldehyde, (E)-

Also known as (E)-2-benzylidenebutanal, (2E)-2-(Phenylmethylene)butanal, Butanal, 2-(phenylmethylene)-, (E)-

CAS 1755-45-9Formula C11H12OMolar mass 160.22 g/molEC 249-037-6
1 supplier listed
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alpha-Ethylcinnamaldehyde, (E)- chemical structure, C11H12O, CAS 1755-45-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1755-45-9
Formula
C11H12O
Molar mass
160.22 g/mol
EC number
249-037-6
HS code
291229
Category
Aldehydes and ketones

What is alpha-Ethylcinnamaldehyde, (E)-?

Plain description, key identifiers and synonyms

alpha-Ethylcinnamaldehyde, (E)- is a chemical substance with the molecular formula C11H12O and a molar mass of 160.22 g/mol. Its CAS registry number is 1755-45-9. The IUPAC name is (2E)-2-benzylidenebutanal.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2E)-2-benzylidenebutanal
CAS number
1755-45-9Other or deprecated CAS: 28467-92-7
EC number
249-037-6
Molecular formula
C11H12O
UNII
WUF97WL37C
InChIKey
BOCRJYUZWIOMOJ-CSKARUKUSA-N
InChI
InChI=1S/C11H12O/c1-2-10(9-12)8-11-6-4-3-5-7-11/h3-9H,2H2,1H3/b10-8+
Canonical SMILES
CCC(C=O)=Cc1ccccc1
Isomeric SMILES
CC/C(=C\C1=CC=CC=C1)/C=O

Synonyms

  • (E)-2-benzylidenebutanal
  • (2E)-2-(Phenylmethylene)butanal
  • Butanal, 2-(phenylmethylene)-, (E)-
  • Butanal, 2-(phenylmethylene)-, (2E)-
  • Cinnamaldehyde, alpha-ethyl-, (E)-
  • (2E)-2-(phenylmethylidene)butanal
  • alpha-Ethylcinnamaldehyde
  • 2-(Phenylmethylene)-Butanal
  • Cinnamaldehyde, alpha-ethyl-

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
160.22 g/molcalc.
Exact mass
160.0888 Dacalc.
LogP (octanol/water)
2.68calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
3calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.18calc.
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, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 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.

alpha-Ethylcinnamaldehyde, (E)- suppliers

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Where suppliers are based

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alpha-Ethylcinnamaldehyde, (E)- 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 alpha-Ethylcinnamaldehyde, (E)- is traded under.

HS 2912.29Indicative HS code

Cyclic aldehydes without other oxygen function, other

World exports in 2024
$435M
+19.0% vs 2023, imports $484M
2019 to 2024
Top exporters
  1. China19.5%
  2. Japan17.4%
  3. India * partner reported13.0%
Top importers
  1. United States22.5%
  2. China9.2%
  3. Singapore8.4%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about alpha-Ethylcinnamaldehyde, (E)-, based on the data on this page

What is alpha-Ethylcinnamaldehyde, (E)-?

alpha-Ethylcinnamaldehyde, (E)- is a chemical substance with the molecular formula C11H12O and a molar mass of 160.22 g/mol. Its CAS registry number is 1755-45-9. The IUPAC name is (2E)-2-benzylidenebutanal.

What is the CAS number of alpha-Ethylcinnamaldehyde, (E)-?

The CAS registry number of alpha-Ethylcinnamaldehyde, (E)- is 1755-45-9. Other or deprecated CAS numbers: 28467-92-7.

What is the molecular formula and weight of alpha-Ethylcinnamaldehyde, (E)-?

The molecular formula of alpha-Ethylcinnamaldehyde, (E)- is C11H12O and its molar mass is 160.22 g/mol.

What is alpha-Ethylcinnamaldehyde, (E)- used for?

Known uses and roles of alpha-Ethylcinnamaldehyde, (E)- include building blocks in research and laboratory and screening compounds in research and laboratory.

Is alpha-Ethylcinnamaldehyde, (E)- hazardous?

No GHS hazard classification for alpha-Ethylcinnamaldehyde, (E)- 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 alpha-Ethylcinnamaldehyde, (E)-?

alpha-Ethylcinnamaldehyde, (E)- is usually classified under HS code 291229 (Cyclic aldehydes without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy alpha-Ethylcinnamaldehyde, (E)-?

CompoundList lists 1 supplier of alpha-Ethylcinnamaldehyde, (E)- in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of alpha-Ethylcinnamaldehyde, (E)-?

Suppliers quote alpha-Ethylcinnamaldehyde, (E)- 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 alpha-Ethylcinnamaldehyde, (E)-

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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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