cis-1-Bromo-2-ethoxyethylene
cis-1-Bromo-2-ethoxyethylene (CAS: 23521-49-5, C4H7BrO) is a halogenated hydrocarbon with a molecular weight of 151.00 g/mol. This compound serves as a versatile building block in organic synthesis. It is primarily utilised in research and development settings for the construction of more complex organic molecules. Its chemical properties make it suitable for various synthetic transformations, particularly in the field of heterocyclic chemistry and for creating novel compounds.
- IUPAC
- cis-2-Ethoxyvinyl bromide
- Synonyms
- cis-2-Ethoxyvinyl bromide

Organic Synthesis Intermediate
Used as a key intermediate in the synthesis of diverse organic compounds. Its functional groups allow for various coupling reactions and transformations in multi-step synthetic routes.
Building Block for Heterocycles
A valuable building block for the construction of heterocyclic ring systems. It can be incorporated into molecules to introduce specific structural motifs found in pharmaceuticals and agrochemicals.
Research and Development
Employed in academic and industrial research laboratories for exploring new chemical reactions and developing novel materials or biologically active compounds.
| Molecular weight | 151.00 |
|---|---|
| Empirical formula | C4H7BrO |
| Assay | ~85% (GC) |
| Boiling point | 139-142 °C |
| Density | 1.42 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.474 |
| Storage temperature | −20°C |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 52 °C / 125.6 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
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 cis-1-Bromo-2-ethoxyethylene used for?
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cis-1-Bromo-2-ethoxyethylene (CAS: 23521-49-5) is primarily used as a building block and intermediate in organic synthesis and for research and development purposes.
What is the CAS number and formula for cis-1-Bromo-2-ethoxyethylene?
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The CAS number is 23521-49-5 and the empirical formula is C4H7BrO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies cis-1-Bromo-2-ethoxyethylene with an assay of approximately 85% (GC). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should cis-1-Bromo-2-ethoxyethylene be handled safely?
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This compound is a flammable liquid (H226) and requires careful handling. Use in a well-ventilated area and wear appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator. Store at -20°C.
How is cis-1-Bromo-2-ethoxyethylene packed and exported?
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Tech Serve Solutions, a specialist global supplier, ensures appropriate packaging for export in compliance with transport regulations, including UN 1993 classification.
How can I request a sample or quote for cis-1-Bromo-2-ethoxyethylene?
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Please contact our sales team via the website or directly to request a sample or obtain a quotation for cis-1-Bromo-2-ethoxyethylene.
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