4-Bromo-3-chloro-2-fluoropyridine

Name: 4-Bromo-3-chloro-2-fluoropyridine
Brand: ChemScene
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CAS No. 1017793-21-3
Cat. No. CS-0046223
Purity≥96%
MDL No.MFCD11040607

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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+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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4-Bromo-3-chloro-2-fluoropyridine|CS-0046223

Structure of 1017793-21-3

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General Information

CAS No. 1017793-21-3
Cat. No. CS-0046223
Purity ≥96%
MDL No. MFCD11040607
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₂BrClFN
Molecular Weight 210.43
Synonym(s) 4-BROMO-3-CHLORO-2-FLUORO-PYRIDINE
SMILES FC1=NC=CC(Br)=C1Cl

Description

4-Bromo-3-chloro-2-fluoropyridine is a halogenated pyridine derivative featuring strategically positioned bromo, chloro, and fluoro substituents. This electron-deficient heterocycle enables direct functionalization in cross-coupling reactions and serves as a key scaffold for medicinal chemistry libraries. The orthogonal reactivity of its halogens permits sequential derivatization under mild conditions.

Application

4-Bromo-3-chloro-2-fluoropyridine serves as a versatile trifunctional pyridine building block for medicinal chemistry and catalytic cross-coupling applications. Its orthogonal halogen reactivity enables sequential functionalization via Pd-catalyzed coupling, while the electron-deficient pyridine core enhances stability and facilitates nucleophilic substitution. Bench-stable and amenable to purification by distillation or flash chromatography, it functions reliably in the construction of complex heterocyclic scaffolds and API intermediates.

Safety Information

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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-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

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Computational Chemistry Data

TPSA 12.89
LogP 2.6366
H_Acceptors 1
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Chloride

Building Blocks Functional Group Bromide

Building Blocks Skeleton Aromatic heterocycle compounds Pyridine compounds

Key Words

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4-Bromo-3-chloro-2-fluoropyridine

CAS No. 1017793-21-3

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