4-(Methylthio)benzoic acid
4-(Methylthio)benzoic acid (CAS: 13205-48-6), with the molecular formula C8H8O2S and a molecular weight of 168.21 g/mol, is a valuable organic building block. This carboxylic acid derivative features a methylthio group, making it a useful intermediate in various chemical syntheses. It is primarily employed in research and development settings for the creation of novel compounds and materials.
- IUPAC
- 4-(Methylmercapto)benzoic acid

Organic Synthesis Intermediate
4-(Methylthio)benzoic acid serves as a key intermediate in the synthesis of more complex organic molecules. Its reactive carboxylic acid group and the methylthio substituent allow for diverse chemical transformations.
Material Science Research
The unique structure of this compound lends itself to applications in material science, where it can be incorporated into polymers or functional materials to impart specific properties.
Pharmaceutical Building Block
This chemical is utilised as a building block in the development of potential pharmaceutical agents, contributing to the exploration of new drug candidates.
| Molecular weight | 168.21 |
|---|---|
| Linear formula | CH3SC6H4CO2H |
| Assay | 97% |
| Melting point | 192-196 °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-(Methylthio)benzoic acid primarily used for?
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4-(Methylthio)benzoic acid is primarily used as a building block in organic synthesis and for research in material science and pharmaceutical development.
What are the CAS number and formula for 4-(Methylthio)benzoic acid?
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The CAS number for 4-(Methylthio)benzoic acid is 13205-48-6, and its molecular formula is C8H8O2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(Methylthio)benzoic acid with an assay of 97%. This product is intended for research and laboratory use. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
What are the key safety considerations when handling 4-(Methylthio)benzoic acid?
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When handling 4-(Methylthio)benzoic acid, it is essential to use personal protective equipment including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used if respiratory protection is needed. The compound has a WGK rating of 3 in Germany.
How is 4-(Methylthio)benzoic acid packed and shipped?
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Tech Serve Solutions exports fine chemicals globally, ensuring appropriate packaging for safe transport in compliance with international shipping regulations.
How can I request a sample or a quote for 4-(Methylthio)benzoic acid?
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To request a sample or obtain a quotation for 4-(Methylthio)benzoic acid, please contact our sales department through the website or by phone.
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