4,4′-Sulfonylbis(methyl benzoate)
4,4′-Sulfonylbis(methyl benzoate) (CAS 3965-53-5) is an organic compound with the molecular formula O2S(C6H4CO2CH3)2 and a molecular weight of 334.34. It is primarily utilised as a building block in chemical synthesis and as an organic intermediate. This sulfone derivative plays a role in the construction of more complex molecules within research and industrial settings.
- IUPAC
- Dimethyl diphenyl sulfone 4,4′-dicarboxylate
- Synonyms
- Dimethyl diphenyl sulfone 4,4′-dicarboxylateO2S(C6H4CO2CH3)2

Organic Synthesis Intermediate
Serves as a key intermediate in the synthesis of diverse organic compounds. Its structure, featuring sulfonyl and ester functionalities, allows for various chemical transformations.
Building Block for Specialty Chemicals
Utilised as a fundamental building block for developing specialised chemicals. The presence of the sulfone group can impart specific properties to target molecules.
Research and Development
Employed in research laboratories for exploring novel synthetic pathways and developing new materials. Its well-defined structure makes it a reliable reagent for academic and industrial R&D.
| Molecular weight | 334.34 |
|---|---|
| Linear formula | O2S(C6H4CO2CH3)2 |
| Assay | 90% |
| Melting point | 195-196 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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 4,4′-Sulfonylbis(methyl benzoate) used for?
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4,4′-Sulfonylbis(methyl benzoate) is used as a building block in chemical synthesis and as an intermediate in the production of organic compounds.
What is the CAS number and molecular formula for 4,4′-Sulfonylbis(methyl benzoate)?
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The CAS number is 3965-53-5 and the linear formula is O2S(C6H4CO2CH3)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4,4′-Sulfonylbis(methyl benzoate) with a minimum assay of 90%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
What are the primary safety considerations when handling 4,4′-Sulfonylbis(methyl benzoate)?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The compound has a WGK Germany rating of 3, indicating a significant hazard to water.
How is 4,4′-Sulfonylbis(methyl benzoate) shipped and exported?
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Tech Serve Solutions specialises in the global export of chemicals, adhering to all necessary regulations for safe and compliant international shipping.
How can I request a sample or quote for 4,4′-Sulfonylbis(methyl benzoate)?
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Please contact our sales team via the website or direct email to request a sample or a quotation for 4,4′-Sulfonylbis(methyl benzoate).
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