4-Bromoisophthalic acid
4-Bromoisophthalic acid (CAS: 6939-93-1) is a dibasic aromatic carboxylic acid with the formula BrC<sub>6</sub>H<sub>3</sub>-1,3-(CO<sub>2</sub>H)<sub>2</sub>. This white to off-white solid, with a molecular weight of 245.03 g/mol, serves as a key building block in organic synthesis. It is utilised in the development of novel materials, pharmaceuticals, and agrochemicals, owing to its functional groups that allow for diverse chemical transformations.
- Synonyms
- 3-(carboxy)bromobenzoic acid5-Bromoisophthalic acid

Organic Synthesis Intermediate
4-Bromoisophthalic acid is a valuable intermediate in the synthesis of more complex organic molecules. Its bromine substituent and two carboxylic acid groups offer multiple sites for chemical modification, enabling the creation of diverse chemical structures for research and development.
Material Science Research
This compound can be employed in the development of polymers and functional materials. The rigid aromatic structure and reactive carboxylic acid moieties are suitable for creating polyesters, polyamides, and metal-organic frameworks (MOFs) with tailored properties.
Pharmaceutical and Agrochemical Development
As a building block, 4-Bromoisophthalic acid is used in the exploratory synthesis of potential drug candidates and agrochemicals. Its structure can be incorporated into molecules designed to interact with biological targets.
| Molecular weight | 245.03 |
|---|---|
| Linear formula | BrC6H3-1,3-(CO2H)2 |
| Assay | 95% |
| Melting point | 297-299 °C(lit.) |
| 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 4-Bromoisophthalic acid used for?
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4-Bromoisophthalic acid is primarily used as a building block in organic synthesis, material science research, and the development of pharmaceuticals and agrochemicals. It is valuable for creating complex organic molecules and functional materials.
What is the CAS number and formula for 4-Bromoisophthalic acid?
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The CAS number for 4-Bromoisophthalic acid is 6939-93-1, and its linear formula is BrC<sub>6</sub>H<sub>3</sub>-1,3-(CO<sub>2</sub>H)<sub>2</sub>.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromoisophthalic acid with an assay of 95%. This product is intended for research and chemical synthesis purposes and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling precautions for 4-Bromoisophthalic acid?
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4-Bromoisophthalic acid is classified under WGK Germany 3. When handling, it is essential to use safety measures including eyeshields and gloves. A respirator filter of type N95 (US) or P1 (EN143) is recommended. Avoid contact with skin, eyes, and clothing, and ensure adequate ventilation.
How is 4-Bromoisophthalic acid packed and shipped?
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4-Bromoisophthalic acid is carefully packed to ensure safe transit and is exported globally by Tech Serve Solutions, adhering to all relevant shipping regulations for chemical substances.
How can I request a quote or sample for 4-Bromoisophthalic acid?
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To request a quote or a sample of 4-Bromoisophthalic acid, please contact our sales team through the website or by calling us directly. We are happy to assist with your specific requirements.
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