4-Chloro-3-chlorosulfonyl-benzoic acid
4-Chloro-3-chlorosulfonyl-benzoic acid (CAS: 2494-79-3) is a chemical compound with the formula C7H4Cl2O4S and a molecular weight of 255.08 g/mol. This organosulfur compound serves as a valuable building block in organic synthesis. It is primarily utilised in the development of complex molecules and intermediates within the chemical and pharmaceutical research sectors.
- IUPAC
- 4-Chloro-3-chlorosulfonylbenzoic acid

Organic Synthesis Intermediate
This compound acts as a key intermediate in the synthesis of various organic molecules. Its functional groups allow for diverse chemical transformations.
Pharmaceutical Research
Utilised as a building block for the development of novel pharmaceutical compounds. It aids in the construction of complex molecular scaffolds.
Chemical Building Block
Serves as a versatile starting material for the creation of a range of chemical products and research materials.
| Molecular weight | 255.08 |
|---|---|
| Empirical formula | C7H4Cl2O4S |


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) | 3 |
|---|---|
| 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 4-Chloro-3-chlorosulfonyl-benzoic acid used for?
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4-Chloro-3-chlorosulfonyl-benzoic acid (CAS: 2494-79-3) is primarily used as a building block in organic synthesis and in pharmaceutical research for developing novel compounds.
What are the CAS number and chemical formula for this compound?
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The CAS number is 2494-79-3, and the chemical formula is C7H4Cl2O4S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical typically as a research or technical grade material. We do not represent it as USP, BP, or EP grade unless explicitly stated.
What are the safety considerations when handling 4-Chloro-3-chlorosulfonyl-benzoic acid?
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This compound is classified as dangerous. It is harmful if swallowed (H302) and causes serious eye damage (H318). Handle with appropriate personal protective equipment, including eye protection, and ensure good ventilation. Refer to the Safety Data Sheet for full details.
Does Tech Serve Solutions export this chemical?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4-Chloro-3-chlorosulfonyl-benzoic acid, serving clients worldwide.
How can I request a quote or sample?
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To request a quote or sample of 4-Chloro-3-chlorosulfonyl-benzoic acid, please contact our sales team via the website or direct email.
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