3-Nitropyridine-2-thiol
3-Nitropyridine-2-thiol (CAS: 38240-29-8, C5H4N2O2S) is a heterocyclic organic compound with a molecular weight of 156.16 g/mol. It is a valuable building block in organic synthesis, particularly for the creation of novel pyridine derivatives. Its structure lends itself to further functionalization, making it a key intermediate for research and development in pharmaceuticals and material science.
- IUPAC
- 3-Nitro-2-pyridinethiol

Chemical Synthesis
Utilised as a precursor in the synthesis of more complex organic molecules. Its reactive thiol group and nitropyridine core allow for diverse chemical transformations.
Pharmaceutical Intermediates
Serves as a building block for the development of potential pharmaceutical agents. The pyridine scaffold is common in many biologically active compounds.
Heterocyclic Chemistry
Employed in the construction and modification of heterocyclic ring systems, offering routes to novel chemical entities with unique properties.
| Molecular weight | 156.16 |
|---|---|
| Empirical formula | C5H4N2O2S |
| Assay | 96% |
| Melting point | 169-175 °C |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41 |
| Safety statements (S) | 26-39 |
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 3-Nitropyridine-2-thiol used for?
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3-Nitropyridine-2-thiol is primarily used as a building block in chemical synthesis, particularly for creating novel pyridine derivatives and as an intermediate in pharmaceutical research.
What is the CAS number and molecular formula for 3-Nitropyridine-2-thiol?
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The CAS number is 38240-29-8, and the molecular formula is C5H4N2O2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Nitropyridine-2-thiol with an assay of 96%. We do not represent this product as USP, BP, or EP grade.
How should 3-Nitropyridine-2-thiol be handled?
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Handling requires caution due to hazards including H302 (Harmful if swallowed), H315 (Causes skin irritation), H318 (Causes serious eye damage), and H335 (May cause respiratory irritation). Use appropriate personal protective equipment (gloves, eye protection, respiratory protection) and ensure good ventilation. Refer to the safety data sheet for full details.
Is 3-Nitropyridine-2-thiol a controlled substance?
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The provided data does not indicate that 3-Nitropyridine-2-thiol is a controlled substance.
How is 3-Nitropyridine-2-thiol shipped?
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Tech Serve Solutions can pack, ship, and export 3-Nitropyridine-2-thiol globally, adhering to all relevant regulations for chemical transport.
How can I request a sample or quote for 3-Nitropyridine-2-thiol?
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To request a sample or quote, please contact our sales team via the website or provided contact details, specifying the product name and CAS number.
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