4-Bromo-2-nitrobenzaldehyde
4-Bromo-2-nitrobenzaldehyde (CAS 5551-12-2) is a key organic intermediate with the molecular formula C7H4BrNO3 and a molecular weight of 230.02 g/mol. This compound serves as a valuable building block in organic synthesis, particularly in the preparation of complex molecules. Its specific substitution pattern makes it useful in introducing both bromo and nitro functionalities into target structures for various chemical research and development applications.

Intermediate in Organic Synthesis
4-Bromo-2-nitrobenzaldehyde is primarily utilised as a versatile building block in the construction of more complex organic molecules. Its aldehyde functionality allows for various condensation and addition reactions, while the bromo and nitro groups offer sites for further chemical transformations.
Precursor for Pharmaceuticals and Agrochemicals
This compound can serve as a precursor in the multi-step synthesis of potential pharmaceutical agents and agrochemicals. The strategic placement of its functional groups aids in developing novel compounds with desired biological activities.
Research and Development
In academic and industrial research laboratories, 4-Bromo-2-nitrobenzaldehyde is employed to explore new synthetic pathways and to develop novel organic compounds. Its availability as a fine chemical facilitates diverse research projects.
| Molecular weight | 230.02 |
|---|---|
| Empirical formula | C7H4BrNO3 |
| Assay | 97% |
| Melting point | 95-100 °C |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H400Very toxic to aquatic life
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Transport (UN / ADR) | UN 3077 9 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 22-36/37/38-43-50 |
| 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 4-Bromo-2-nitrobenzaldehyde used for?
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4-Bromo-2-nitrobenzaldehyde is used as a building block in organic synthesis, a precursor for pharmaceuticals and agrochemicals, and in various research and development activities.
What is the CAS number and molecular formula for 4-Bromo-2-nitrobenzaldehyde?
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The CAS number is 5551-12-2 and the molecular formula is C7H4BrNO3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromo-2-nitrobenzaldehyde with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 4-Bromo-2-nitrobenzaldehyde be handled safely?
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Based on GHS classifications, this compound is harmful if swallowed, causes skin irritation, may cause an allergic skin reaction, causes serious eye irritation, and may cause respiratory irritation. It is also very toxic to aquatic life. Handle with appropriate personal protective equipment in a well-ventilated area, avoiding release into the environment.
Is 4-Bromo-2-nitrobenzaldehyde a controlled substance?
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The provided data does not indicate that 4-Bromo-2-nitrobenzaldehyde is a controlled substance.
How is 4-Bromo-2-nitrobenzaldehyde packed and shipped?
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We offer various packaging options suitable for export. Please contact us for specific details regarding packing and international shipping regulations for UN 3077, 9 / PGIII.
How can I request a sample or quote for 4-Bromo-2-nitrobenzaldehyde?
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To request a sample or a quotation, please use the contact form on our website or call our sales team, referencing product CAS 5551-12-2.
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