Favipiravir impurity 5

Name: Favipiravir impurity 5
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CAS No. 1257072-34-6
Cat. No. CS-0120284
Purity≥97%
MDL No.MFCD23097407

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
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Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
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Structure of 1257072-34-6

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General Information

CAS No. 1257072-34-6
Cat. No. CS-0120284
Purity ≥97%
MDL No. MFCD23097407
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅HBrClN₃
Molecular Weight 218.44
Synonym(s) None
SMILES N#CC1=NC(Br)=CN=C1Cl

Description

6-Bromo-3-chloropyrazine-2-carbonitrile features a highly functionalized pyrazine core with complementary halogen and nitrile handles. This electron-deficient heterocycle enables efficient coupling in cross-coupling reactions, particularly under palladium catalysis. The strategic placement of bromo and chloro groups facilitates sequential functionalization, while the carbonitrile moiety provides a robust anchor for further derivatization. Bench-stable and moisture-tolerant, this compound serves as a key building block in medicinal chemistry and materials science.

Application

6-Bromo-3-chloropyrazine-2-carbonitrile serves as a versatile heterocyclic building block for medicinal chemistry and materials science. Its dual halogenation (Br, Cl) at adjacent positions enables sequential cross-coupling reactions, while the nitrile group provides a handle for derivatization via hydrolysis or nucleophilic addition. The molecule exhibits good bench stability and facilitates efficient functional group interconversions in standard synthetic workflows.

Safety Information

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GHS Pictogram : N/A	GHS No : N/A
Signal Word : N/A	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : N/A
Precautionary Statements : N/A

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Computational Chemistry Data

TPSA 49.57
LogP 1.76418
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Chloride

Building Blocks Functional Group Cyanide/Nitrile

Building Blocks Functional Group Bromide

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazine compounds

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Favipiravir impurity 5

CAS No. 1257072-34-6

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