3-Chloro-4-iodopyridine
3-Chloro-4-iodopyridine (CAS: 77332-79-7) is a halogenated pyridine derivative with the molecular formula C5H3ClIN and a molecular weight of 239.44 g/mol. This compound serves as a valuable building block in organic synthesis, particularly within the fields of chemical synthesis and heterocyclic chemistry. Its distinct halogen substituents make it a useful intermediate for introducing functional groups or constructing more complex molecular architectures.

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of complex organic molecules. Its pyridine core and halogen substituents allow for diverse derivatisation reactions.
Heterocyclic Chemistry Research
A useful reagent for researchers exploring novel heterocyclic compounds. It can be employed in coupling reactions or nucleophilic substitution pathways.
Pharmaceutical Intermediate Development
Serves as a building block in the multi-step synthesis of potential pharmaceutical candidates. The pyridine scaffold is common in many biologically active molecules.
| Molecular weight | 239.44 |
|---|---|
| Empirical formula | C5H3ClIN |
| Assay | 97% |
| Melting point | 104-108 °C |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Water hazard class (WGK, DE) | nwg |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41 |
| Safety statements (S) | 26-36/37/39 |
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 3-Chloro-4-iodopyridine used for?
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3-Chloro-4-iodopyridine (CAS: 77332-79-7) is primarily used as a building block and intermediate in organic synthesis, particularly in the development of new heterocyclic compounds and potential pharmaceutical agents.
What are the CAS number and formula for 3-Chloro-4-iodopyridine?
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The CAS number is 77332-79-7 and the empirical formula (Hill notation) is C5H3ClIN.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Chloro-4-iodopyridine with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the primary safety concerns when handling 3-Chloro-4-iodopyridine?
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3-Chloro-4-iodopyridine is classified as Danger. It is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye damage (H318), and may cause respiratory irritation (H335). Appropriate personal protective equipment and handling procedures are essential.
Does Tech Serve Solutions export 3-Chloro-4-iodopyridine?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3-Chloro-4-iodopyridine.
How can I request a quote or sample for 3-Chloro-4-iodopyridine?
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Please contact our sales department via the website or direct email to request a quote or sample for 3-Chloro-4-iodopyridine (CAS: 77332-79-7).
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