3-Bromo-1-methylpyrazin-2(1H)-one

Name: 3-Bromo-1-methylpyrazin-2(1H)-one
Brand: ChemScene
Availability: InStock
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CAS No. 1187017-25-9
Cat. No. CS-0441905
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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3-Bromo-1-methylpyrazin-2(1H)-one|CS-0441905

Structure of 1187017-25-9

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Description

3-Bromo-1-methylpyrazin-2(1H)-one features a brominated pyrazinone core with a methyl group at the 1-position, offering a reactive site for cross-coupling transformations. The electron-deficient ring system enhances compatibility in transition-metal-catalyzed reactions, while the bench-stable nature supports reliable handling under standard conditions.

Application

3-Bromo-1-methylpyrazin-2(1H)-one serves as a versatile building block in heterocyclic synthesis, enabling palladium-catalyzed cross-coupling reactions due to its well-defined bromo substituent. The pyrazinone core provides a stable, bench-accessible scaffold with moderate polarity, facilitating purification and compatibility with common reaction conditions. Its functional group tolerance supports downstream derivatization in medicinal chemistry and process development workflows.

General Information

CAS No. 1187017-25-9
Cat. No. CS-0441905
Purity ≥98%
MDL No. None
Storage 4°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₅BrN₂O
Molecular Weight 189.01
Synonym(s) 3-bromo-1-methyl-1,2-dihydropyrazin-2-one
SMILES CN1C=CN=C(C1=O)Br

Computational Chemistry Data

TPSA 34.89
LogP 0.5428
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 0

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-P330-P362+P364-P405-P501

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Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazine compounds

Key Words

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3-Bromo-1-methylpyrazin-2(1H)-one

CAS No. 1187017-25-9

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