2-Chloro-5-(methylthio)benzoic acid
2-Chloro-5-(methylthio)benzoic acid (CAS: 51546-12-4) is a specialised organic compound with the chemical formula ClC6H3(SCH3)CO2H and a molecular weight of 202.66 g/mol. This technical grade chemical, assaying at 96%, serves as a valuable building block in chemical synthesis. Its structure, featuring a benzoic acid core with chloro and methylthio substituents, makes it suitable for further chemical modification and research applications.

Chemical Synthesis Intermediate
2-Chloro-5-(methylthio)benzoic acid is employed as a key intermediate in the synthesis of more complex organic molecules. Its functional groups allow for a variety of chemical transformations, supporting research in materials science and medicinal chemistry.
Organic Building Block
This compound functions as a versatile organic building block for constructing novel chemical entities. Researchers utilise it in multi-step syntheses to create target molecules with specific properties and functionalities.
Research and Development
Utilised in academic and industrial R&D settings, 2-Chloro-5-(methylthio)benzoic acid aids in exploring new reaction pathways and developing innovative chemical products. Its specific substitution pattern offers unique reactivity for synthetic chemists.
| Molecular weight | 202.66 |
|---|---|
| Linear formula | ClC6H3(SCH3)CO2H |
| Assay | 96% |
| Grade | technical grade |
| Application | 2-Chloro-5-(methylthio)benzoic acid may be used in chemical synthesis studies. |
| Melting point | 136-137 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 2-Chloro-5-(methylthio)benzoic acid used for?
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2-Chloro-5-(methylthio)benzoic acid is primarily used as a building block and intermediate in chemical synthesis and research and development studies.
What are the CAS number and chemical formula?
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The CAS number for 2-Chloro-5-(methylthio)benzoic acid is 51546-12-4, and its chemical formula is ClC6H3(SCH3)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Chloro-5-(methylthio)benzoic acid in technical grade with an assay of 96%. We do not represent this product as USP, BP, or EP grade.
How should 2-Chloro-5-(methylthio)benzoic acid be handled?
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Handle with appropriate personal protective equipment including a dust mask (type N95 US), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation. Refer to the safety data sheet for comprehensive handling information, as it may cause skin irritation, eye irritation, and respiratory irritation (H315, H319, H335).
Is 2-Chloro-5-(methylthio)benzoic acid exported globally?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 2-Chloro-5-(methylthio)benzoic acid.
How can I request a sample or quote for 2-Chloro-5-(methylthio)benzoic acid?
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Please contact our sales department via the website or phone to request a sample or a detailed quotation.
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