1H-1,2,4-Triazole-3-thiol
1H-1,2,4-Triazole-3-thiol (CAS 3179-31-5) is a heterocyclic organic compound with the molecular formula C2H3N3S and a molecular weight of 101.13 g/mol. This versatile building block is characterised by its thiol group and triazole ring structure, making it a valuable intermediate in organic synthesis. It finds application in the development of novel compounds, particularly within pharmaceutical research and material science.
- IUPAC
- 3-Mercapto-1,2,4-triazole
- Synonyms
- 3179-31-5C2H3N3S3-Mercapto-1,2,4-triazole

Organic Synthesis Intermediate
Utilised as a key building block in the synthesis of more complex organic molecules. Its reactive thiol group and heterocyclic core allow for diverse chemical transformations.
Pharmaceutical Research
Serves as a precursor or scaffold in the development of potential pharmaceutical agents. The triazole moiety is present in various bioactive compounds.
Material Science Applications
Investigated for its potential use in the development of new materials due to its unique structural features and chemical properties.
| Molecular weight | 101.13 |
|---|---|
| Empirical formula | C2H3N3S |
| Assay | 97% |
| Solubility | H2O: soluble50 g/L |
| Melting point | 221-224 °C(lit.) |
Precautionary statements
- P305IF IN EYES
| Water hazard class (WGK, DE) | 1 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36 |
| Safety statements (S) | 26-33-39-7/8 |
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 1H-1,2,4-Triazole-3-thiol used for?
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1H-1,2,4-Triazole-3-thiol (CAS 3179-31-5) is primarily used as a versatile building block and intermediate in organic synthesis, particularly in pharmaceutical research and material science applications.
What is the CAS number and formula for 1H-1,2,4-Triazole-3-thiol?
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The CAS number is 3179-31-5 and the empirical formula is C2H3N3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1H-1,2,4-Triazole-3-thiol with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 1H-1,2,4-Triazole-3-thiol be handled safely?
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1H-1,2,4-Triazole-3-thiol is harmful if swallowed and causes serious eye irritation. Handle with appropriate personal protective equipment, including eye protection, and ensure good ventilation. In case of contact with eyes, rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Refer to the Safety Data Sheet (SDS) for full details.
Is 1H-1,2,4-Triazole-3-thiol a controlled substance?
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Based on the provided data, there is no indication that 1H-1,2,4-Triazole-3-thiol is a controlled substance.
How is 1H-1,2,4-Triazole-3-thiol packed and exported?
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1H-1,2,4-Triazole-3-thiol is packed and exported in compliance with international shipping regulations for chemical substances.
How can I request a quote or sample of 1H-1,2,4-Triazole-3-thiol?
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To request a quote or sample of 1H-1,2,4-Triazole-3-thiol, please contact the Tech Serve Solutions sales team through our website or by phone.
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