2-(4-Bromo-1h-pyrazol-1-yl)pyrazine

Name: 2-(4-Bromo-1h-pyrazol-1-yl)pyrazine
Brand: ChemScene
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CAS No. 1183521-48-3
Cat. No. CS-0235706
Molecule weight225.05
Purity≥98%
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+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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2-(4-Bromo-1h-pyrazol-1-yl)pyrazine|CS-0235706

Structure of 1183521-48-3

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General Information

CAS No. 1183521-48-3
Cat. No. CS-0235706
Purity ≥98%
MDL No. None
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₅BrN₄
Molecular Weight 225.05
Synonym(s) None
SMILES BrC1=CN(C2=NC=CN=C2)N=C1

Description

2-(4-Bromo-1H-pyrazol-1-yl)pyrazine features a brominated pyrazole moiety fused to a pyrazine core, enabling efficient coupling in cross-coupling reactions. The electron-deficient pyrazine ring enhances reactivity in transition-metal-catalyzed transformations, while the bromine atom serves as a reliable handle for further functionalization. This compound exhibits bench-stable handling and compatibility with standard synthetic protocols.

Application

2-(4-Bromo-1H-pyrazol-1-yl)pyrazine serves as a versatile building block for constructing bioactive heterocyclic scaffolds. The bromo group enables palladium-catalyzed cross-coupling reactions, facilitating the assembly of complex molecules under mild conditions. Its pyrazine core provides enhanced solubility and metabolic stability, while the 1H-pyrazole moiety offers orthogonal reactivity for further functionalization. This compound exhibits excellent bench stability and is compatible with standard purification protocols, making it ideal for medicinal chemistry and process development workflows.

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-P330-P362+P364-P405-P501

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Computational Chemistry Data

TPSA 43.6
LogP 1.4248
H_Acceptors 4
H_Donors 0
Rotatable_Bonds 1

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazine compounds

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Key Words

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2-(4-Bromo-1h-pyrazol-1-yl)pyrazine

CAS No. 1183521-48-3

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