1-(2-Chloroethyl)-5-methyl-1H-pyrazole
1-(2-Chloroethyl)-5-methyl-1H-pyrazole (CAS: 96450-54-3, C6H9ClN2) is a halogenated heterocyclic compound with a molecular weight of 144.60 g/mol. Utilised as a chemical building block in organic synthesis, it offers a pyrazole core functionalised with a reactive chloroethyl group. This structure makes it a valuable intermediate for the construction of more complex molecules, particularly in pharmaceutical research and development and fine chemical manufacturing. Tech Serve Solutions supplies this compound for laboratory and industrial applications.

Organic Synthesis Intermediate
This pyrazole derivative serves as a versatile building block in multi-step organic synthesis. The chloroethyl moiety allows for nucleophilic substitution reactions, enabling the introduction of the 5-methyl-1H-pyrazol-1-yl)ethyl group into target molecules.
Pharmaceutical Research
It is employed in the discovery and development of novel pharmaceutical agents. The pyrazole ring is a common feature in many biologically active compounds, and this intermediate facilitates the synthesis of potential drug candidates.
Fine Chemical Manufacturing
Used in the production of specialised fine chemicals. Its specific structure can be incorporated into diverse chemical entities for various industrial applications beyond pharmaceuticals.
| Molecular weight | 144.60 |
|---|---|
| Empirical formula | C6H9ClN2 |
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 1-(2-Chloroethyl)-5-methyl-1H-pyrazole used for?
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1-(2-Chloroethyl)-5-methyl-1H-pyrazole is primarily used as a building block in organic synthesis, particularly in pharmaceutical research and fine chemical manufacturing to construct more complex molecules.
What is the CAS number and chemical formula for this compound?
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The CAS number is 96450-54-3 and the empirical formula is C6H9ClN2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound as a research or technical grade. We do not represent it as USP, BP, EP, or other pharmacopoeial grades unless explicitly stated in the product specifications.
How should 1-(2-Chloroethyl)-5-methyl-1H-pyrazole be handled?
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Refer to the Safety Data Sheet (SDS) for comprehensive safety and handling information. This compound may cause skin irritation, serious eye irritation, and respiratory irritation. Handle with appropriate personal protective equipment in a well-ventilated area.
How is this chemical shipped and exported?
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Tech Serve Solutions is experienced in exporting fine chemicals globally. This compound is carefully packed according to international shipping regulations to ensure safe transport and delivery.
How can I request a quote or sample?
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To request a quote or sample, please contact our sales team through the website or by calling us directly. Please provide the product name and CAS number for prompt service.
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