5-Bromo-2-hydroxybenzonitrile
5-Bromo-2-hydroxybenzonitrile (CAS: 40530-18-5) is a notable organic building block with the molecular formula C7H4BrNO and a molecular weight of 198.02 g/mol. This compound serves as a valuable intermediate in chemical synthesis, particularly within the realm of nitrogen and cyanide chemistry. Its structure, featuring both a bromine atom and a hydroxyl group on a benzonitrile core, allows for diverse synthetic transformations, making it a useful reagent for researchers and industrial chemists developing novel molecules.

Organic Synthesis Intermediate
Utilised as a foundational component in the multi-step synthesis of complex organic molecules. Its functional groups enable participation in various coupling and substitution reactions.
Research and Development
Employed in academic and industrial R&D settings for the exploration of new chemical entities and reaction pathways. Its specific structure makes it ideal for developing novel pharmaceutical or agrochemical candidates.
Fine Chemical Production
Serves as a precursor in the manufacturing of fine chemicals where specific aromatic substitution patterns are required. The nitrile and hydroxyl functionalities offer strategic points for molecular modification.
| Molecular weight | 198.02 |
|---|---|
| Empirical formula | C7H4BrNO |
| Assay | 97% |
| Melting point | 158-163 °C |

Hazard statements
- H302Harmful if swallowed
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
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 5-Bromo-2-hydroxybenzonitrile used for?
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5-Bromo-2-hydroxybenzonitrile is primarily used as an intermediate in organic synthesis and in research and development for creating novel chemical compounds.
What is the CAS number and formula for 5-Bromo-2-hydroxybenzonitrile?
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The CAS number is 40530-18-5, and the empirical formula is C7H4BrNO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Bromo-2-hydroxybenzonitrile with a minimum assay of 97%. TSS does not represent this product as USP, BP, or EP grade.
How should 5-Bromo-2-hydroxybenzonitrile be handled?
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Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Avoid ingestion and eye contact, as it is harmful if swallowed and causes serious eye irritation (H302, H319).
Is 5-Bromo-2-hydroxybenzonitrile a controlled substance?
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Based on the provided data, there is no indication that 5-Bromo-2-hydroxybenzonitrile is a controlled substance.
How is 5-Bromo-2-hydroxybenzonitrile packed and exported?
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5-Bromo-2-hydroxybenzonitrile is packed according to industry standards for chemical reagents and can be exported globally by Tech Serve Solutions.
How can I request a quote or sample?
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To request a quote or sample of 5-Bromo-2-hydroxybenzonitrile, please contact the Tech Serve Solutions sales team through our website or by phone.
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