5-(4-Bromophenyl)isoxazole-3-carboxylic acid hydrazide
5-(4-Bromophenyl)isoxazole-3-carboxylic acid hydrazide (CAS: 870703-96-1) is a halogenated heterocyclic compound with the molecular formula C10H8BrN3O2 and a molecular weight of 282.09 g/mol. As a valuable building block in organic synthesis, it is primarily utilised in chemical research and development for the construction of more complex molecular structures. Its isoxazole core and bromophenyl substituent offer versatile reaction sites for medicinal chemistry and materials science applications.

Organic Synthesis Intermediate
This compound serves as a key intermediate in the synthesis of novel organic molecules. Its functional groups allow for diverse chemical transformations, making it useful in the development of new chemical entities.
Medicinal Chemistry Research
The isoxazole scaffold is prevalent in many biologically active compounds. 5-(4-Bromophenyl)isoxazole-3-carboxylic acid hydrazide can be employed in the exploration of new drug candidates with potential therapeutic applications.
Materials Science
The presence of the bromophenyl group suggests potential applications in the development of functional materials, such as organic semiconductors or ligands for coordination chemistry.
| Molecular weight | 282.09 |
|---|---|
| Empirical formula | C10H8BrN3O2 |
| Assay | 97% |
| Melting point | 191 °C (dec.)(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26-36 |
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-(4-Bromophenyl)isoxazole-3-carboxylic acid hydrazide used for?
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This compound is primarily used as a building block in organic synthesis, particularly in medicinal chemistry research and potentially in materials science due to its heterocyclic and halogenated structure.
What are the CAS number and formula for this product?
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The CAS number is 870703-96-1, and the empirical formula (Hill notation) is C10H8BrN3O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 97%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade unless explicitly stated in the product specifications.
How should 5-(4-Bromophenyl)isoxazole-3-carboxylic acid hydrazide be handled safely?
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Based on GHS information, this compound is harmful if swallowed, causes skin irritation, causes serious eye irritation, and may cause respiratory irritation. Recommended personal protective equipment includes a dust mask (type N95 US), eyeshields, faceshields, and gloves. Handle in a well-ventilated area.
Is this chemical a controlled substance?
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The provided data does not indicate that this chemical is a controlled substance.
How is this product packed, shipped, and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. Products are typically packed securely for transit according to international shipping regulations. Please contact us for specific export details.
How can I request a quote or sample?
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Please use the contact form on our website or contact our sales team directly to request a quote or a sample of 5-(4-Bromophenyl)isoxazole-3-carboxylic acid hydrazide.
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