3-Chloro-6-methylpyridazine
3-Chloro-6-methylpyridazine (CAS: 1121-79-5), with the molecular formula C5H5ClN2 and a molecular weight of 128.56 g/mol, is a halogenated heterocyclic compound. It serves as a valuable building block in organic synthesis, particularly within the fields of chemical synthesis and the development of pharmaceutical intermediates. Its structure lends itself to further functionalisation in creating more complex molecules.

Organic Synthesis Intermediate
3-Chloro-6-methylpyridazine is utilised as a key intermediate in the synthesis of various organic compounds. Its reactive chlorine atom and pyridazine core allow for diverse chemical transformations.
Pharmaceutical Research
This compound finds application in pharmaceutical research and development, acting as a scaffold for the creation of novel drug candidates. Its heterocyclic nature is common in many biologically active molecules.
Heterocyclic Chemistry
As a member of the pyridazine family, it is employed in studies and syntheses involving heterocyclic chemistry, contributing to the expansion of known chemical structures and reactions.
| Molecular weight | 128.56 |
|---|---|
| Empirical formula | C5H5ClN2 |
| Assay | 97% |
| Melting point | 58-62 °C |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-38-41-43 |
| Safety statements (S) | 26-36/37 |
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 3-Chloro-6-methylpyridazine used for?
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3-Chloro-6-methylpyridazine is primarily used as a building block and intermediate in organic synthesis, particularly in pharmaceutical research and heterocyclic chemistry.
What are the CAS number and formula for 3-Chloro-6-methylpyridazine?
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The CAS number is 1121-79-5 and the empirical formula is C5H5ClN2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Chloro-6-methylpyridazine with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 3-Chloro-6-methylpyridazine be handled safely?
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Handle with appropriate personal protective equipment including a dust mask (N95), eyeshields, faceshields, and gloves. This compound is classified as dangerous (Danger) with hazards including H302 (harmful if swallowed), H315 (causes skin irritation), H317 (may cause an allergic skin reaction), and H318 (causes serious eye damage).
Does TSS export 3-Chloro-6-methylpyridazine?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3-Chloro-6-methylpyridazine.
How can I request a sample or quote for 3-Chloro-6-methylpyridazine?
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Please contact our sales team or use the online inquiry form on our website to request a sample or a quote for 3-Chloro-6-methylpyridazine.
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