2-Bromo-1,3,2-benzodioxaborole
2-Bromo-1,3,2-benzodioxaborole (CAS 51901-85-0) is a versatile organoboron compound with the molecular formula C6H4BBrO2 and a molecular weight of 198.81 g/mol. It is a key intermediate in organic synthesis, particularly valued for its role in cross-coupling reactions. This compound is primarily utilised in the development of pharmaceuticals, agrochemicals, and advanced materials, serving as a crucial building block for complex molecular structures.
- IUPAC
- B-Bromocatechol-borane
- Synonyms
- 51901-85-0C6H4BBrO2B-Bromocatechol-borane

Organic Synthesis Intermediate
Utilised as a building block in the synthesis of complex organic molecules. Its structure lends itself to various coupling reactions, facilitating the formation of new carbon-carbon and carbon-heteroatom bonds.
Pharmaceutical Research and Development
Serves as a precursor in the development of novel pharmaceutical agents. Its reactivity allows for the introduction of specific functional groups necessary for drug discovery and optimisation.
Agrochemical Synthesis
Employed in the creation of advanced agrochemical compounds. It contributes to the development of new pesticides, herbicides, and fungicides with improved efficacy and specificity.
Materials Science
Applied in the synthesis of functional materials. Its organoboron nature makes it suitable for incorporation into polymers, organic electronics, and other advanced material applications.
| Molecular weight | 198.81 |
|---|---|
| Empirical formula | C6H4BBrO2 |
| Assay | 97% |
| Boiling point | 76 °C/9 mmHg(lit.) |
| Storage temperature | 2-8°C |
| Melting point | 51-53 °C(lit.) |


Hazard statements
- H228Flammable solid
- H314Causes severe skin burns and eye damage
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | 42 °C / 107.6 °F |
| Transport (UN / ADR) | UN 2925 4.1/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 14-34-37 |
| Safety statements (S) | 26-36/37/39-45 |
| Supplemental hazards | Reacts violently with water. |
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 2-Bromo-1,3,2-benzodioxaborole used for?
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2-Bromo-1,3,2-benzodioxaborole (CAS 51901-85-0) is primarily used as an intermediate in organic synthesis, particularly in the pharmaceutical, agrochemical, and materials science industries for the creation of complex molecules.
What is the CAS number and formula for 2-Bromo-1,3,2-benzodioxaborole?
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The CAS number for 2-Bromo-1,3,2-benzodioxaborole is 51901-85-0, and its empirical formula is C6H4BBrO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Bromo-1,3,2-benzodioxaborole with a minimum assay of 97%. This product is intended for laboratory and research purposes and is not represented as USP, BP, or EP grade.
How should 2-Bromo-1,3,2-benzodioxaborole be handled safely?
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2-Bromo-1,3,2-benzodioxaborole is a Danger hazard class substance that reacts violently with water and causes severe skin burns and eye damage. Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area, and keep away from moisture. Refer to the Safety Data Sheet for comprehensive handling information.
How is 2-Bromo-1,3,2-benzodioxaborole packed and shipped?
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2-Bromo-1,3,2-benzodioxaborole is carefully packed according to international regulations for hazardous materials, including UN 2925 classification. TSS exports this chemical globally, adhering to all shipping and customs requirements.
How can I request a sample or quote for 2-Bromo-1,3,2-benzodioxaborole?
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To request a sample or a quote for 2-Bromo-1,3,2-benzodioxaborole, please use the contact form on our website or call our sales department, providing the product name and CAS number (51901-85-0).
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