5-Mercapto-1H-tetrazole-1-methanesulfonic acid
5-Mercapto-1H-tetrazole-1-methanesulfonic acid (CAS: 67146-22-9, C2H4N4O3S2) is a heterocyclic compound with a molecular weight of 196.21 g/mol. This chemical is primarily utilised as a building block in chemical synthesis, particularly within the field of heterocyclic chemistry. Its structure lends itself to further functionalisation in the development of novel molecules and materials. Tech Serve Solutions supplies this compound for research and development purposes.

Organic Synthesis
Serves as a versatile intermediate and building block in the synthesis of more complex organic molecules. Its tetrazole and sulfonic acid functionalities allow for diverse chemical transformations.
Heterocyclic Chemistry
Essential component in the construction of various heterocyclic frameworks. It is particularly useful for introducing the tetrazole moiety into target compounds.
Materials Science Research
May be employed in research exploring new materials with specific electronic or structural properties, leveraging its unique functional groups.
| Molecular weight | 196.21 |
|---|---|
| Empirical formula | C2H4N4O3S2 |
| Assay | 95% |
| Melting point | 155-158 °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) | 26-36 |
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 5-Mercapto-1H-tetrazole-1-methanesulfonic acid primarily used for?
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5-Mercapto-1H-tetrazole-1-methanesulfonic acid is primarily used as a building block in organic and heterocyclic synthesis.
What are the CAS number and formula for 5-Mercapto-1H-tetrazole-1-methanesulfonic acid?
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The CAS number is 67146-22-9, and the empirical formula is C2H4N4O3S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Mercapto-1H-tetrazole-1-methanesulfonic acid with an assay of 95%. This product is supplied for research and development and is not represented as USP, BP, EP, or other pharmacopoeial grades.
How should 5-Mercapto-1H-tetrazole-1-methanesulfonic acid be handled safely?
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This compound is a Warning substance that can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, should be worn. Ensure adequate ventilation. In case of eye contact, rinse cautiously with water for several minutes and seek medical advice.
Is 5-Mercapto-1H-tetrazole-1-methanesulfonic acid available for international export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 5-Mercapto-1H-tetrazole-1-methanesulfonic acid.
How can I request a sample or quote for 5-Mercapto-1H-tetrazole-1-methanesulfonic acid?
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To request a sample or quote, please use the contact form on our website or contact our sales team directly, providing the product name and CAS number.
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