3,5-Dibromo-2-hydroxypyrazine
3,5-Dibromo-2-hydroxypyrazine (CAS: 21943-15-7), a halogenated heterocyclic compound, possesses the molecular formula C4H2Br2N2O and a molecular weight of 253.88 g/mol. This pyrazine derivative serves as a valuable building block in organic synthesis, particularly for researchers and chemists engaged in the development of novel chemical entities and complex molecular structures. Its specific substitution pattern makes it a useful intermediate in various chemical research applications.
- IUPAC
- 3,5-Dibromo-pyrazin-2-ol
- Synonyms
- C4H2Br2N2O3,5-Dibromo-pyrazin-2-ol

Organic Synthesis Intermediate
Utilised as a key intermediate in multi-step organic syntheses. The presence of bromine atoms and the pyrazine ring allows for diverse chemical transformations.
Heterocyclic Chemistry Research
A valuable reagent for exploring the synthesis of novel pyrazine-based compounds and halogenated heterocycles. Useful in medicinal chemistry and materials science research.
Building Block for Complex Molecules
Serves as a foundational component for constructing more intricate molecular architectures. Its defined structure aids in predictable synthetic pathways.
| Molecular weight | 253.88 |
|---|---|
| Empirical formula | C4H2Br2N2O |
| Assay | 97% |
| Melting point | 174-178 °C |


Hazard statements
- H302Harmful if swallowed
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Water hazard class (WGK, DE) | 1 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-41 |
| Safety statements (S) | 26-39 |
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 3,5-Dibromo-2-hydroxypyrazine primarily used for?
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3,5-Dibromo-2-hydroxypyrazine (CAS: 21943-15-7) is primarily used as a building block and intermediate in organic synthesis, particularly within heterocyclic and halogenated compound research.
What is the CAS number and molecular formula for 3,5-Dibromo-2-hydroxypyrazine?
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The CAS number is 21943-15-7 and the empirical formula (Hill notation) is C4H2Br2N2O.
What grade and purity does Tech Serve Solutions supply for 3,5-Dibromo-2-hydroxypyrazine?
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Tech Serve Solutions supplies 3,5-Dibromo-2-hydroxypyrazine with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the main safety hazards associated with 3,5-Dibromo-2-hydroxypyrazine?
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3,5-Dibromo-2-hydroxypyrazine is classified as Danger with hazards including H302 (Harmful if swallowed) and H318 (Causes serious eye damage). Appropriate personal protective equipment (PPE) such as gloves and eye protection should be worn during handling.
How is 3,5-Dibromo-2-hydroxypyrazine typically packed and shipped?
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We offer 3,5-Dibromo-2-hydroxypyrazine in various pack sizes suitable for laboratory and research use. We are experienced in global export and ensure compliance with all shipping regulations for chemical products.
How can I request a sample or a quote for 3,5-Dibromo-2-hydroxypyrazine?
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To request a sample or a quote, please contact our sales team through the website or by phone, providing the product name and CAS number (21943-15-7).
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