2-Bromo-5-chloropyrazine

Name: 2-Bromo-5-chloropyrazine
Brand: ChemScene
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CAS No. 912773-21-8
Cat. No. CS-W005165
Purity≥96%
MDL No.MFCD08460074

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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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General Information

CAS No. 912773-21-8
Cat. No. CS-W005165
Purity ≥96%
MDL No. MFCD08460074
Storage 4°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₂BrClN₂
Molecular Weight None
Synonym(s) 2-bromo-5-chloro-pyrazine
SMILES BrC1=NC=C(N=C1)Cl

Description

2-Bromo-5-chloropyrazine is a heteroaromatic dihalogenated pyrazine featuring complementary reactivity at distinct ring positions. This electron-deficient scaffold enables selective cross-coupling transformations under palladium catalysis, facilitating the construction of complex nitrogen-containing architectures in medicinal chemistry and materials science.

Application

2-Bromo-5-chloropyrazine serves as a versatile heterocyclic building block for transition-metal-catalyzed cross-coupling reactions, enabling the efficient construction of biaryl and functionalized pyrazine scaffolds. Its complementary halogenation pattern offers orthogonal reactivity in palladium- or nickel-catalyzed coupling processes, facilitating rapid diversification in medicinal chemistry and materials science applications. The compound exhibits good bench stability and is compatible with standard purification protocols.

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 25.78
LogP 1.8925
H_Acceptors 2
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Bromide

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazine compounds

Key Words

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2-Bromo-5-chloropyrazine

CAS No. 912773-21-8

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