2-Chloro-5-ethyl-1,3,4-thiadiazole
2-Chloro-5-ethyl-1,3,4-thiadiazole (CAS 71859-81-9) is a halogenated heterocyclic compound with the molecular formula C4H5ClN2S and a molecular weight of 148.61 g/mol. This chemical serves as a versatile building block in organic synthesis, particularly for the creation of more complex molecules. It finds application in research and development settings within the chemical and pharmaceutical industries, facilitating the exploration of novel compounds.
- Synonyms
- 71859-81-9C4H5ClN2S

Organic Synthesis Intermediate
Utilised as a key intermediate in the multi-step synthesis of various organic compounds. Its structure allows for diverse chemical modifications.
Heterocyclic Chemistry Research
A valuable reagent for researchers exploring the chemistry of thiadiazole derivatives and halogenated heterocycles. Enables the study of structure-activity relationships.
Pharmaceutical R&D
Employed in the early stages of drug discovery and development to construct potential therapeutic agents. It forms part of novel molecular scaffolds.
| Molecular weight | 148.61 |
|---|---|
| Empirical formula | C4H5ClN2S |
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-Chloro-5-ethyl-1,3,4-thiadiazole used for?
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2-Chloro-5-ethyl-1,3,4-thiadiazole is primarily used as an intermediate in organic synthesis and in research and development for creating novel chemical compounds, particularly within the pharmaceutical sector.
What is the CAS number and molecular formula for 2-Chloro-5-ethyl-1,3,4-thiadiazole?
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The CAS number is 71859-81-9, and the empirical formula is C4H5ClN2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical as a research or technical grade. We do not represent it as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling precautions for 2-Chloro-5-ethyl-1,3,4-thiadiazole?
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Specific safety data is available in the Material Safety Data Sheet (MSDS). General precautions for handling fine chemicals should be observed, including adequate ventilation and appropriate personal protective equipment.
How is 2-Chloro-5-ethyl-1,3,4-thiadiazole packed, shipped, and exported?
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Tech Serve Solutions handles packing, shipping, and export of chemicals in compliance with all relevant international regulations for hazardous and non-hazardous materials.
How can I request a sample or a quote for 2-Chloro-5-ethyl-1,3,4-thiadiazole?
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To request a sample or a quotation, please use the contact form on our website or reach out to our sales department directly with your inquiry.
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