Methyl 4-bromocrotonate
Methyl 4-bromocrotonate (CAS: 1117-71-1) is a halogenated ester with the linear formula BrCH2CH=CHCO2CH3 and a molecular weight of 179.01 g/mol. This compound serves as a valuable building block in organic synthesis, particularly for introducing functionalised four-carbon chains. It is frequently employed in the development of pharmaceutical intermediates and complex organic molecules, owing to its reactive bromine atom and ester functionality.

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its structure allows for various chemical transformations, making it useful in multi-step synthetic pathways.
Pharmaceutical Intermediate Development
Serves as a building block in the research and development of novel pharmaceutical compounds. Its functional groups enable the construction of diverse molecular scaffolds relevant to drug discovery.
Reagent in Chemical Research
Employed in academic and industrial research laboratories for exploring new synthetic methodologies and creating novel chemical entities. Its reactive nature facilitates a range of chemical reactions.
| Molecular weight | 179.01 |
|---|---|
| Linear formula | BrCH2CH=CHCO2CH3 |
| Assay | 85% |
| Grade | technical grade |
| Boiling point | 83-85 °C/13 mmHg(lit.) |
| Density | 1.522 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.501(lit.) |
| Storage temperature | 2-8°C |
| Impurities tested | <15% 2(5H)-furanone |


Hazard statements
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 92 °C / 197.6 °F |
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 37/38-41 |
| Safety statements (S) | 26-39 |
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 Methyl 4-bromocrotonate used for?
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Methyl 4-bromocrotonate is primarily used as a building block in organic synthesis and as an intermediate in the development of pharmaceutical compounds. It is also utilised as a reagent in chemical research.
What is the CAS number and formula for Methyl 4-bromocrotonate?
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The CAS number for Methyl 4-bromocrotonate is 1117-71-1, and its linear formula is BrCH2CH=CHCO2CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl 4-bromocrotonate in technical grade with an assay of 85%. We do not represent this product as USP, BP, or EP grade.
How should Methyl 4-bromocrotonate be handled safely?
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Methyl 4-bromocrotonate is a Danger material that causes skin irritation, serious eye damage, and respiratory irritation (H315, H318, H335). Always use appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator. Handle in a well-ventilated area.
How is Methyl 4-bromocrotonate packed and exported?
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Tech Serve Solutions, a global supplier and exporter since 1998, packs and exports chemicals according to international shipping regulations to ensure safe transit.
How can I request a quote or sample?
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To request a quote or sample of Methyl 4-bromocrotonate, please contact our sales team through the website or by phone.
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