2-Chloro-3-iodo-5-nitropyridine
2-Chloro-3-iodo-5-nitropyridine (CAS: 25391-60-0) is a heterocyclic organic compound with the molecular formula C5H2ClIN2O2 and a molecular weight of 284.44 g/mol. This pyridine derivative is characterised by its chloro, iodo, and nitro functional groups, making it a valuable intermediate in organic synthesis. It serves as a versatile building block for the construction of more complex molecules, particularly within the fields of pharmaceutical and agrochemical research.

Chemical Synthesis Intermediate
This compound functions as a key building block in multi-step organic syntheses. Its reactive halogen substituents (chlorine and iodine) and the electron-withdrawing nitro group allow for diverse chemical transformations and derivatizations.
Pharmaceutical Research
2-Chloro-3-iodo-5-nitropyridine is utilised in the synthesis of novel pharmaceutical agents. It provides a scaffold for developing compounds with potential therapeutic applications, leveraging the pyridine core and its functional groups.
Agrochemical Development
The unique structure of this molecule makes it suitable for incorporation into new agrochemical candidates, such as pesticides or herbicides. Its derivatives can be explored for bioactivity and efficacy in crop protection.
Heterocyclic Chemistry
As a functionalised pyridine, it is of interest in heterocyclic chemistry for creating complex ring systems and studying structure-activity relationships.
| Molecular weight | 284.44 |
|---|---|
| Empirical formula | C5H2ClIN2O2 |
| Assay | 97% |
| Melting point | 102-106 °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-Chloro-3-iodo-5-nitropyridine used for?
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2-Chloro-3-iodo-5-nitropyridine is primarily used as a versatile building block and intermediate in organic synthesis, particularly for the development of pharmaceuticals and agrochemicals, and in heterocyclic chemistry.
What is the CAS number and molecular formula for 2-Chloro-3-iodo-5-nitropyridine?
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The CAS number is 25391-60-0, and the molecular formula is C5H2ClIN2O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product at an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 2-Chloro-3-iodo-5-nitropyridine be handled safely?
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This compound is classified as Dangerous. It is harmful if swallowed (H302) and causes serious eye damage (H318). Always wear appropriate protective equipment (P280) and handle with care, especially when in contact with eyes (P305 + P351 + P338).
Is 2-Chloro-3-iodo-5-nitropyridine suitable for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and can ship 2-Chloro-3-iodo-5-nitropyridine internationally, adhering to all transport regulations (UN 2811 6.1 / PGIII).
How can I request a sample or quote for this chemical?
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To request a sample or a quote, please contact our sales team through the website or by phone, providing the product name and CAS number (25391-60-0).
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