2-Chloropyrido[2,3-b]pyrazine

Name: 2-Chloropyrido[2,3-b]pyrazine
Brand: ChemScene
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CAS No. 70838-55-0
Cat. No. CS-0155652
Purity≥97%
MDL No.MFCD06738667

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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-Chloropyrido[2,3-b]pyrazine|CS-0155652

Structure of 70838-55-0

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General Information

CAS No. 70838-55-0
Cat. No. CS-0155652
Purity ≥97%
MDL No. MFCD06738667
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₄ClN₃
Molecular Weight 165.58
Synonym(s) 2-CHLOROPYRIDO[2,2-B]PYRAZINE
SMILES C1=CC2=NC(=CN=C2N=C1)Cl

Description

2-Chloropyrido[2,3-b]pyrazine is a heteroaromatic scaffold featuring a chlorinated pyridopyrazine core. This electron-deficient system integrates readily into medicinal chemistry campaigns, offering a rigid, planar framework for targeted molecular design. The chlorine substituent enables direct functionalization or metal-catalyzed coupling reactions, enhancing its utility in drug discovery and materials science applications.

Application

2-Chloropyrido[2,3-b]pyrazine serves as a versatile heterocyclic building block in medicinal chemistry, enabling palladium-catalyzed cross-coupling reactions due to its well-defined reactivity at the chlorine site. The fused pyridopyrazine core provides enhanced metabolic stability and favorable electronic properties for target-directed synthesis. Its bench-stable nature and compatibility with standard reaction conditions facilitate efficient incorporation into complex molecular architectures, including kinase inhibitors and other bioactive scaffolds.

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-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 38.67
LogP 1.6782
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyridine compounds

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazine compounds

Key Words

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2-Chloropyrido[2,3-b]pyrazine

CAS No. 70838-55-0

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