3-Bromo-4-methoxybenzenesulfonyl chloride
3-Bromo-4-methoxybenzenesulfonyl chloride (CAS 23094-96-4) is a halogenated aromatic sulfonyl chloride with a molecular weight of 285.54 g/mol. It is a key intermediate in organic synthesis, particularly valuable for introducing the 3-bromo-4-methoxyphenylsulfonyl moiety into target molecules. This compound serves as a crucial building block in the development of various chemical entities for research and development purposes.

Organic Synthesis Intermediate
Utilised as a versatile building block in the synthesis of complex organic molecules. It facilitates the introduction of the 3-bromo-4-methoxyphenylsulfonyl group, enabling the construction of novel chemical scaffolds.
Research and Development
A valuable reagent for academic and industrial research laboratories exploring new synthetic routes and developing novel compounds. Its specific structure allows for targeted functionalization in multi-step syntheses.
Pharmaceutical Intermediate
Serves as a precursor in the synthesis of potential pharmaceutical candidates. The bromo-methoxy-benzenesulfonyl structure can be incorporated into molecules designed for various therapeutic applications.
| Molecular weight | 285.54 |
|---|---|
| Empirical formula | C7H6BrClO3S |
| Assay | 97% |
| Melting point | 83-88 °C |


Hazard statements
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Transport (UN / ADR) | UN 3261 8 / PGII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 22-34 |
| Safety statements (S) | 26-36/37/39-45 |
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-Bromo-4-methoxybenzenesulfonyl chloride primarily used for?
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3-Bromo-4-methoxybenzenesulfonyl chloride is primarily used as an intermediate in organic synthesis and for research and development purposes, particularly in the pharmaceutical sector.
What is the CAS number and molecular formula for this compound?
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The CAS number is 23094-96-4 and the empirical formula (Hill Notation) is C7H6BrClO3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated in the product data.
How should 3-Bromo-4-methoxybenzenesulfonyl chloride be handled safely?
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This compound is classified as corrosive and harmful if swallowed. It causes severe skin burns and eye damage. Always handle with appropriate personal protective equipment, including gloves, eye protection, and protective clothing, in a well-ventilated area. Refer to the Safety Data Sheet (SDS) for full details.
Is this chemical suitable for export or international shipment?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals. This product is shipped according to international regulations (UN 3261, 8 / PGII).
How can I request a quote or sample for 3-Bromo-4-methoxybenzenesulfonyl chloride?
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To request a quote or sample, please contact our sales team via the website or by phone. Provide the product name and CAS number (23094-96-4) for prompt service.
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