trans-4-Bromocinnamaldehyde
trans-4-Bromocinnamaldehyde (CAS: 49678-04-8; Formula: C9H7BrO; Mol. Wt.: 211.06) is a valuable organic building block. This brominated aldehyde, characterised by its E-isomer configuration, serves as a versatile intermediate in organic synthesis. Its utility spans various chemical research and development applications, particularly in the construction of more complex molecular architectures for materials science and pharmaceutical discovery.
- IUPAC
- E-3-(4-Bromophenyl)-2-propenal
- Synonyms
- E-3-(4-Bromophenyl)-2-propenal

Organic Synthesis Intermediate
Utilised as a key building block in the synthesis of diverse organic compounds. The presence of both an aldehyde and a bromo-aryl group allows for a wide range of chemical transformations.
Pharmaceutical Research
Serves as a precursor or intermediate in the development of novel pharmaceutical agents. Its structure can be incorporated into molecules designed for specific biological targets.
Materials Science
Can be employed in the synthesis of functional materials and polymers. The bromocinnamaldehyde moiety offers opportunities for further functionalisation and polymerisation.
| Molecular weight | 211.06 |
|---|---|
| Empirical formula | C9H7BrO |
| Assay | 97% |
| Melting point | 78-82 °C |

Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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 trans-4-Bromocinnamaldehyde used for?
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trans-4-Bromocinnamaldehyde is primarily used as a versatile intermediate in organic synthesis, including pharmaceutical research and materials science, due to its reactive aldehyde and bromo-aryl functionalities.
What is the CAS number and molecular formula for trans-4-Bromocinnamaldehyde?
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The CAS number is 49678-04-8 and the molecular formula is C9H7BrO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies trans-4-Bromocinnamaldehyde at an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should trans-4-Bromocinnamaldehyde be handled safely?
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trans-4-Bromocinnamaldehyde is classified with a Warning signal word and the hazard statement H319, indicating it causes serious eye irritation. Appropriate personal protective equipment, including eyeshields, gloves, and a type N95 (US) or type P1 (EN143) respirator filter, should be used. Handle in a well-ventilated area and follow P305 + P351 + P338 precautionary statements.
Is trans-4-Bromocinnamaldehyde a controlled substance?
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Based on the provided data, trans-4-Bromocinnamaldehyde is not indicated as a controlled substance.
How is trans-4-Bromocinnamaldehyde packed and exported?
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Tech Serve Solutions exports chemicals globally, ensuring appropriate packaging for safe transit and compliance with international shipping regulations.
How can I request a quote or sample for trans-4-Bromocinnamaldehyde?
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To request a quote or sample, please contact our sales department through the website or direct inquiry channels.
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