2,4-Dichloro-3-iodopyridine
2,4-Dichloro-3-iodopyridine (CAS 343781-36-2), with the molecular formula C5H2Cl2IN and a molecular weight of 273.89 g/mol, is a halogenated pyridine derivative. This compound serves as a valuable building block in organic synthesis. Its specific substitution pattern makes it a useful intermediate for creating more complex heterocyclic structures, particularly within pharmaceutical and agrochemical research and development sectors. It is supplied by Tech Serve Solutions with an assay of 97%.
- IUPAC
- 2,4-Dichloro-3-iodo-pyridine
- Synonyms
- 2,4-Dichloro-3-iodopyridine2,4-Dichloro-3-iodo-pyridine

Organic Synthesis Intermediate
2,4-Dichloro-3-iodopyridine is utilised as a key intermediate in multi-step organic syntheses. Its reactive halogen atoms allow for diverse functionalisation pathways, enabling the construction of complex molecular architectures.
Heterocyclic Chemistry
As a substituted pyridine, this compound is employed in the synthesis of novel heterocyclic systems. These are of interest in medicinal chemistry and materials science for their unique electronic and biological properties.
Research and Development
This chemical is primarily used in laboratory settings for research purposes. It aids chemists in exploring new synthetic routes and developing novel compounds with potential applications.
| Molecular weight | 273.89 |
|---|---|
| Empirical formula | C5H2Cl2IN |
| Assay | 97% |
| Melting point | 90-94 °C |


Hazard statements
- H302Harmful if swallowed
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-41 |
| Safety statements (S) | 26-39 |
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 2,4-Dichloro-3-iodopyridine primarily used for?
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2,4-Dichloro-3-iodopyridine is primarily used as a building block and intermediate in organic synthesis and heterocyclic chemistry research and development.
What is the CAS number and molecular formula for 2,4-Dichloro-3-iodopyridine?
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The CAS number is 343781-36-2 and the molecular formula is C5H2Cl2IN.
What grade and purity does Tech Serve Solutions supply for 2,4-Dichloro-3-iodopyridine?
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Tech Serve Solutions supplies 2,4-Dichloro-3-iodopyridine with an assay of 97%. We do not represent this product as USP, BP, EP or other pharmacopoeia grades.
How should 2,4-Dichloro-3-iodopyridine be handled safely?
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2,4-Dichloro-3-iodopyridine is classified as Danger, with hazards H302 (Harmful if swallowed) and H318 (Causes serious eye damage). Handle with appropriate personal protective equipment (P280) and if in eyes, rinse cautiously with water for several minutes (P305 + P351 + P338).
How is 2,4-Dichloro-3-iodopyridine packed and exported?
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2,4-Dichloro-3-iodopyridine is packed according to international shipping regulations, including UN 2811 classification for transport. Tech Serve Solutions is an experienced global exporter.
How can I request a quote or sample for 2,4-Dichloro-3-iodopyridine?
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To request a quote or sample, please contact our sales team through the website or by phone, providing your contact details and the product CAS number 343781-36-2.
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