3-(Methylthio)phenylboronic acid
3-(Methylthio)phenylboronic acid (CAS: 128312-11-8, C7H9BO2S) is a valuable organoboron compound with a molecular weight of 168.02 g/mol. It is primarily utilised as a building block in organic synthesis, particularly in cross-coupling reactions such as Suzuki-Miyaura couplings. Its utility extends to the development of complex organic molecules, pharmaceuticals, and advanced materials, serving as a key intermediate for chemists in research and industrial settings.

Organic Synthesis Intermediate
This aryl boronic acid serves as a crucial reagent in Suzuki-Miyaura coupling reactions, enabling the formation of carbon-carbon bonds. It is extensively used for constructing complex molecular architectures in academic and industrial research laboratories.
Pharmaceutical Development
The compound is a versatile intermediate in the synthesis of novel pharmaceutical agents. Its unique structure allows for the introduction of specific functional groups, facilitating drug discovery and development processes.
Materials Science
3-(Methylthio)phenylboronic acid finds application in the creation of advanced materials, including polymers and organic electronic components. Its reactivity profile makes it suitable for developing molecules with tailored electronic or optical properties.
| Molecular weight | 168.02 |
|---|---|
| Empirical formula | C7H9BO2S |
| Assay | 95% |
| Melting point | 160-162 °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 3-(Methylthio)phenylboronic acid used for?
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3-(Methylthio)phenylboronic acid is primarily used as a building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions for creating carbon-carbon bonds. It is also utilised in pharmaceutical development and materials science.
What is the CAS number and chemical formula for 3-(Methylthio)phenylboronic acid?
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The CAS number is 128312-11-8, and the chemical formula is C7H9BO2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-(Methylthio)phenylboronic acid with an assay of 95%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety considerations when handling 3-(Methylthio)phenylboronic acid?
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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. It is classified under WGK Germany 2, indicating it is hazardous to water.
How is 3-(Methylthio)phenylboronic acid packed and shipped?
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3-(Methylthio)phenylboronic acid is carefully packed and exported by Tech Serve Solutions, adhering to international shipping regulations for chemicals.
How can I request a quote or sample for 3-(Methylthio)phenylboronic acid?
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To request a quote or sample, please contact our sales team through the TSS website or by phone. We cater to global export requirements.
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