2-Mercaptopyridine
2-Mercaptopyridine (CAS: 2637-34-5; Formula: C5H5NS; MW: 111.16) is a heterocyclic organic compound featuring a pyridine ring with a thiol group. This versatile building block is primarily utilised in chemical synthesis and the development of novel compounds. Its structure makes it a valuable intermediate for creating more complex molecules, particularly within the realms of pharmaceuticals and materials science. TSS supplies this chemical at a minimum assay of 98%.
- IUPAC
- 2-Pyridinethiol,2-Pyridyl mercaptan
- Synonyms
- 2-Pyridinethiol2-Pyridyl mercaptan

Chemical Synthesis Intermediate
2-Mercaptopyridine serves as a crucial intermediate in organic synthesis. Its reactive thiol group allows for a variety of chemical transformations, facilitating the construction of more complex molecular architectures.
Heterocyclic Chemistry
As a substituted pyridine, this compound is employed in the synthesis of various heterocyclic compounds. It is a valuable building block for researchers developing new pharmaceuticals and agrochemicals.
Ligand Development
The presence of both nitrogen and sulfur atoms makes 2-Mercaptopyridine a potential candidate for coordination chemistry and ligand development in catalysis.
| Molecular weight | 111.16 |
|---|---|
| Empirical formula | C5H5NS |
| Assay | 98% |
| Melting point | 127-130 °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
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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-Mercaptopyridine used for?
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2-Mercaptopyridine is primarily used as a building block in chemical synthesis, particularly for creating heterocyclic compounds and as an intermediate in pharmaceutical and materials science research.
What is the CAS number and chemical formula for 2-Mercaptopyridine?
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The CAS number is 2637-34-5 and the chemical formula is C5H5NS.
What grade and purity does Tech Serve Solutions supply for 2-Mercaptopyridine?
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Tech Serve Solutions supplies 2-Mercaptopyridine with a minimum assay of 98%. This product is not supplied as USP, BP, or EP grade.
What are the main safety hazards associated with 2-Mercaptopyridine?
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2-Mercaptopyridine is classified as a Warning substance. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area.
How is 2-Mercaptopyridine shipped and exported by TSS?
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Tech Serve Solutions is experienced in the global export of chemicals like 2-Mercaptopyridine. Products are carefully packaged to ensure safe transit according to international shipping regulations.
How can I request a quote or sample of 2-Mercaptopyridine?
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To request a quote or sample, please use the contact form on our website or call our sales department. Please specify the quantity required and your delivery location.
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