5-Methyl-1,3,4-thiadiazole-2-thiol
5-Methyl-1,3,4-thiadiazole-2-thiol (CAS 29490-19-5), with a molecular formula of C3H4N2S2 and a molecular weight of 132.21 g/mol, is a heterocyclic organic compound. It serves as a valuable building block in chemical synthesis, particularly within the realm of heterocyclic chemistry. Its specific structure lends itself to the development of novel compounds and materials for various research and industrial applications.
- IUPAC
- 2-Mercapto-5-methyl-1,3,4-thiadiazole
- Synonyms
- 29490-19-5C3H4N2S22-Mercapto-5-methyl-1,3,4-thiadiazole

Chemical Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its reactive thiol group and thiadiazole ring offer versatile reaction pathways.
Heterocyclic Chemistry Research
A valuable reagent for researchers exploring the properties and applications of thiadiazole derivatives. It can be incorporated into diverse molecular scaffolds.
Material Science Development
Potentially employed in the development of new materials where its unique heterocyclic structure can impart specific properties.
| Molecular weight | 132.21 |
|---|---|
| Empirical formula | C3H4N2S2 |
| Assay | 99% |
| Solubility | chloroform: soluble10 mg/mL, clear to very slightly hazy, colorless |
| Melting point | 188-189 °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 5-Methyl-1,3,4-thiadiazole-2-thiol used for?
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5-Methyl-1,3,4-thiadiazole-2-thiol is primarily used as a building block and intermediate in chemical synthesis, particularly within heterocyclic chemistry research and potentially in material science development.
What is the CAS number and formula for 5-Methyl-1,3,4-thiadiazole-2-thiol?
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The CAS number is 29490-19-5, and its empirical formula (Hill notation) is C3H4N2S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Methyl-1,3,4-thiadiazole-2-thiol with an assay of 99%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade unless explicitly stated otherwise in the product documentation.
How should I handle 5-Methyl-1,3,4-thiadiazole-2-thiol safely?
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Based on GHS classifications, this compound is an irritant to skin, eyes, and the respiratory system. Handle with appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves. Ensure adequate ventilation. Refer to the safety data sheet for full details.
Is this chemical a controlled substance?
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The provided data does not indicate that 5-Methyl-1,3,4-thiadiazole-2-thiol is a controlled substance.
How is 5-Methyl-1,3,4-thiadiazole-2-thiol packed and exported?
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Tech Serve Solutions packs and exports chemicals according to international regulations to ensure safe transit. Specific packaging details can be provided upon request.
How can I request a sample or quote for 5-Methyl-1,3,4-thiadiazole-2-thiol?
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To request a sample or a quote, please use the contact form on our website or reach out to our sales department directly with your inquiry, referencing the product name and CAS number.
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