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Monomers

3,5-Dimethoxystyrene

Also known as 1-ethenyl-3,5-dimethoxybenzene, Benzene, 1-ethenyl-3,5-dimethoxy-, 1,3-dimethoxy-5-vinyl-benzene

CAS 40243-87-6Formula C10H12O2Molar mass 164.20 g/molEC 161-759-2
GHS signal word: Warning. Pictograms: Harmful or irritant
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3,5-Dimethoxystyrene chemical structure, C10H12O2, CAS 40243-87-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
40243-87-6
Formula
C10H12O2
Molar mass
164.20 g/mol
EC number
161-759-2
HS code
290930
Category
Monomers

What is 3,5-Dimethoxystyrene?

Plain description, key identifiers and synonyms

3,5-Dimethoxystyrene is a chemical substance with the molecular formula C10H12O2 and a molar mass of 164.20 g/mol. Its CAS registry number is 40243-87-6. The IUPAC name is 1-ethenyl-3,5-dimethoxybenzene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-ethenyl-3,5-dimethoxybenzene
CAS number
40243-87-6 CAS number cross-checked
EC number
161-759-2
Molecular formula
C10H12O2
MDL number
MFCD20384494
InChIKey
YYDWZJCCIAMZIH-UHFFFAOYSA-N
InChI
InChI=1S/C10H12O2/c1-4-8-5-9(11-2)7-10(6-8)12-3/h4-7H,1H2,2-3H3
SMILES (canonical and isomeric)
COC1=CC(=CC(=C1)C=C)OC

Synonyms

  • 1-ethenyl-3,5-dimethoxybenzene
  • Benzene, 1-ethenyl-3,5-dimethoxy-
  • 1,3-dimethoxy-5-vinyl-benzene

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
164.20 g/molcalc.
Exact mass
164.0837 Dacalc.
LogP (octanol/water)
2.35calc.
Topological polar surface area
18.46 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
3calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.2calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • 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).
  • P332 + P317If skin irritation 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

3,5-Dimethoxystyrene suppliers

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3,5-Dimethoxystyrene price

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Uses and applications

What the substance is used for, by industry and function

Industries and functions

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 3,5-Dimethoxystyrene is traded under.

HS 2909.30Indicative HS code

Aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives

World exports in 2024
$470M
−2.2% vs 2023, imports $432M
2019 to 2024
Top exporters
  1. China45.7%
  2. Germany15.7%
  3. India * partner reported9.9%
Top importers
  1. United States14.3%
  2. China11.8%
  3. India * partner reported8.3%

* Partner reported figures, a lower bound.

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

The HS code shown for 3,5-Dimethoxystyrene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 3,5-Dimethoxystyrene, based on the data on this page

What is 3,5-Dimethoxystyrene?

3,5-Dimethoxystyrene is a chemical substance with the molecular formula C10H12O2 and a molar mass of 164.20 g/mol. Its CAS registry number is 40243-87-6. The IUPAC name is 1-ethenyl-3,5-dimethoxybenzene.

What is the CAS number of 3,5-Dimethoxystyrene?

The CAS registry number of 3,5-Dimethoxystyrene is 40243-87-6.

What is the molecular formula and weight of 3,5-Dimethoxystyrene?

The molecular formula of 3,5-Dimethoxystyrene is C10H12O2 and its molar mass is 164.20 g/mol.

What is 3,5-Dimethoxystyrene used for?

Known uses and roles of 3,5-Dimethoxystyrene include monomers in plastics and polymers.

Is 3,5-Dimethoxystyrene hazardous?

3,5-Dimethoxystyrene carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 3,5-Dimethoxystyrene?

3,5-Dimethoxystyrene is usually classified under HS code 290930 (Aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 3,5-Dimethoxystyrene?

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What is the price of 3,5-Dimethoxystyrene?

Suppliers quote 3,5-Dimethoxystyrene 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 3,5-Dimethoxystyrene

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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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