2-Bromo-4-chloro-5-methylpyridine

Name: 2-Bromo-4-chloro-5-methylpyridine
Brand: ChemScene
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CAS No. 1033203-40-5
Cat. No. CS-0146027
Purity≥96%
MDL No.MFCD11100651

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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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2-Bromo-4-chloro-5-methylpyridine|CS-0146027

Structure of 1033203-40-5

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General Information

CAS No. 1033203-40-5
Cat. No. CS-0146027
Purity ≥96%
MDL No. MFCD11100651
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₆H₅BrClN
Molecular Weight 206.47
Synonym(s) None
SMILES CC1=CN=C(Br)C=C1Cl

Description

2-Bromo-4-chloro-5-methylpyridine features a pyridine core functionalized with bromo, chloro, and methyl groups at positions 2, 4, and 5 respectively. This electron-deficient heterocycle integrates readily into cross-coupling reactions, serving as a key building block for pharmaceutical intermediates and agrochemical scaffolds. The strategically positioned halogens enable selective derivatization under palladium-catalyzed conditions.

Application

2-Bromo-4-chloro-5-methylpyridine serves as a versatile building block in medicinal chemistry and heterocyclic synthesis. Its orthogonal halogenation pattern enables selective cross-coupling reactions, facilitating the construction of complex pyridyl scaffolds. The methyl group enhances metabolic stability, while the bromo and chloro substituents offer complementary reactivity in Pd-catalyzed transformations. Bench-stable and amenable to purification by distillation or chromatography, it functions reliably in standard synthetic workflows for API development and library synthesis.

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 2.80592
H_Acceptors 1
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Bromide

Building Blocks Skeleton Aromatic heterocycle compounds Pyridine compounds

Key Words

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2-Bromo-4-chloro-5-methylpyridine

CAS No. 1033203-40-5

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