3,4-Dimethoxyphenethyl bromide
3,4-Dimethoxyphenethyl bromide (CAS 40173-90-8), a chemical intermediate with the linear formula H3COC6H3(OCH3)CH2CH2Br and a molecular weight of 245.11 g/mol, is a valuable building block in organic synthesis. It is commonly employed in the preparation of more complex organic molecules, particularly within pharmaceutical research and chemical development due to its ether and bromide functionalities.
- IUPAC
- 2-Methoxy-4-(2-bromoethyl)anisole,3,4-Dimethoxy-1-(2-bromoethyl)benzene
- Synonyms
- 2-Methoxy-4-(2-bromoethyl)anisole3,4-Dimethoxy-1-(2-bromoethyl)benzene

Organic Synthesis
Serves as a key intermediate and building block for the synthesis of complex organic compounds. Its reactive bromide group allows for various coupling and substitution reactions.
Pharmaceutical Research
Utilised in the development of novel pharmaceutical agents. The dimethoxy-substituted phenethyl structure is a motif found in various biologically active molecules.
Chemical Reagent
Employed as a reagent in academic and industrial research laboratories for exploring new synthetic pathways and methodologies.
| Molecular weight | 245.11 |
|---|---|
| Linear formula | H3COC6H3(OCH3)CH2CH2Br |
| Assay | 97% |
| Boiling point | 130-131 °C/3 mmHg(lit.) |
| Melting point | 52-56 °C(lit.) |


Hazard statements
- H301Toxic if swallowed
- H319Causes serious eye irritation
- H400Very toxic to aquatic life
Precautionary statements
- P273Avoid release to the environment
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | >109 °C / >228.2 °F |
| Transport (UN / ADR) | UN 2811 6.1/PG 3 |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 22-36-50 |
| Safety statements (S) | 26-36/37-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 3,4-Dimethoxyphenethyl bromide used for?
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3,4-Dimethoxyphenethyl bromide is primarily used as a building block in organic synthesis and in pharmaceutical research for the development of new chemical entities.
What is the CAS number and chemical formula for 3,4-Dimethoxyphenethyl bromide?
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The CAS number is 40173-90-8, and its linear chemical formula is H3COC6H3(OCH3)CH2CH2Br.
What grade and purity does Tech Serve Solutions supply for 3,4-Dimethoxyphenethyl bromide?
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Tech Serve Solutions supplies 3,4-Dimethoxyphenethyl bromide with a minimum assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated in the product documentation.
What are the primary safety hazards associated with 3,4-Dimethoxyphenethyl bromide?
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3,4-Dimethoxyphenethyl bromide is classified as Danger, with hazards including H301 (Toxic if swallowed) and H319 (Causes serious eye irritation). It is also H400 (Very toxic to aquatic life). Appropriate personal protective equipment such as eye shields, gloves, and a dust mask (N95) should be used.
How is 3,4-Dimethoxyphenethyl bromide packed, shipped, and exported?
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3,4-Dimethoxyphenethyl bromide is carefully packed according to international shipping regulations for hazardous materials. Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals.
How can I request a sample or quote for 3,4-Dimethoxyphenethyl bromide?
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To request a sample or a quote for 3,4-Dimethoxyphenethyl bromide, please contact our sales team through the website or by phone, providing your specific requirements.
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