2,3-Dichloro-5-iodopyridine

Name: 2,3-Dichloro-5-iodopyridine
Brand: ChemScene
Availability: InStock
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CAS No. 97966-01-3
Cat. No. CS-0054884
Purity≥95%
MDL No.None

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
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General Information

CAS No. 97966-01-3
Cat. No. CS-0054884
Purity ≥95%
MDL No. None
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₂Cl₂IN
Molecular Weight 273.89
Synonym(s) 2,3-dichloro-5-iodo-pyridine
SMILES ClC1=CC(I)=CN=C1Cl

Description

2,3-Dichloro-5-iodopyridine is a halogenated pyridine derivative featuring complementary reactivity at the 2-, 3-, and 5-positions. This electron-deficient heterocycle enables direct cross-coupling transformations under palladium catalysis, serving as a key building block for functionalized pharmaceutical intermediates and agrochemical scaffolds. The strategic placement of chlorine and iodine atoms facilitates sequential derivatization while maintaining stability under standard reaction conditions.

Application

2,3-Dichloro-5-iodopyridine serves as a versatile building block in medicinal chemistry and heterocyclic synthesis, enabling palladium-catalyzed cross-coupling reactions due to its orthogonal halogen reactivity. The iodine moiety facilitates efficient C–C and C–heteroatom bond formation, while the dichloro substituents provide structural rigidity and tune electronic properties. Its bench-stable nature and compatibility with standard coupling protocols make it ideal for constructing complex pyridine-based scaffolds in API development.

Synthesis

Route1
- In-stock
  
  426463-09-4
- ~67%
- In-stock
  
  97966-01-3
References
- Research Triangle Institute Patent: US6538010 B1, 2003 ;

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P280-P302+P352

Quality Control

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Computational Chemistry Data

TPSA 12.89
LogP 2.993
H_Acceptors 1
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Chloride

Building Blocks Skeleton Aromatic heterocycle compounds Pyridine compounds

Key Words

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2,3-Dichloro-5-iodopyridine

CAS No. 97966-01-3

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