2-Chloro-4-iodopyridine-3-carboxylic acid
2-Chloro-4-iodopyridine-3-carboxylic acid (CAS: 544671-78-5) is a halogenated heterocyclic compound with the molecular formula C6H3ClINO2 and a molecular weight of 283.45 g/mol. This pyridine derivative serves as a valuable building block in organic synthesis. Its distinct functional groups, including the carboxylic acid, chloro, and iodo substituents, allow for diverse chemical transformations, making it useful in the development of complex molecules.
- IUPAC
- 2-Chloro-4-iodonicotinic acid

Organic Synthesis
This compound acts as a key intermediate in the synthesis of more complex organic molecules. The presence of both chloro and iodo groups on the pyridine ring offers regioselective functionalization opportunities.
Pharmaceutical Intermediate
It can be utilised in the research and development of novel pharmaceutical agents. The pyridine core is a common scaffold in many biologically active compounds.
Chemical Research
As a functionalised heterocycle, it is employed in academic and industrial research laboratories for developing new chemical entities and exploring reaction pathways.
| Molecular weight | 283.45 |
|---|---|
| Empirical formula | C6H3ClINO2 |
| Assay | 97% |
| Melting point | 162-167 °C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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-Chloro-4-iodopyridine-3-carboxylic acid used for?
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2-Chloro-4-iodopyridine-3-carboxylic acid is primarily used as a building block in organic synthesis, particularly in the development of pharmaceutical intermediates and other complex organic molecules.
What is the CAS number and formula for this compound?
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The CAS number is 544671-78-5, and the empirical formula is C6H3ClINO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 97%. We do not represent it as USP, BP, or EP grade.
How should 2-Chloro-4-iodopyridine-3-carboxylic acid be handled?
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This compound is classified as a Warning. It can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including gloves, eye protection, and ensure adequate ventilation. Avoid breathing dust.
Is this chemical exported by Tech Serve Solutions?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 2-Chloro-4-iodopyridine-3-carboxylic acid.
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 phone. Please specify the quantity required.
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