3-Bromo-5-methylpyrazin-2(1H)-one

Name: 3-Bromo-5-methylpyrazin-2(1H)-one
Brand: ChemScene
Availability: InStock
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CAS No. 1260810-61-4
Cat. No. CS-0188073
Purity≥98%
MDL No.MFCD13193675

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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-5-methylpyrazin-2(1H)-one|CS-0188073

Structure of 1260810-61-4

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Description

3-Bromo-5-methylpyrazin-2(1H)-one features a brominated pyrazinone core with a methyl group at the 5-position, offering a reactive site for cross-coupling and a sterically accessible framework for derivatization. This bench-stable heterocycle integrates readily into complex molecular architectures under standard conditions.

Application

3-Bromo-5-methylpyrazin-2(1H)-one serves as a versatile building block in medicinal chemistry, enabling palladium-catalyzed cross-coupling reactions due to its bromine substituent. The pyrazinone core provides hydrogen-bonding capability and metabolic stability, while the methyl group enhances lipophilicity and electronic modulation. Bench-stable and amenable to purification by recrystallization, it facilitates efficient synthesis of heterocyclic scaffolds relevant to kinase inhibitors and antimicrobial agents.

General Information

CAS No. 1260810-61-4
Cat. No. CS-0188073
Purity ≥98%
MDL No. MFCD13193675
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₅BrN₂O
Molecular Weight 189.01
Synonym(s) 3-Bromo-5-methyl-2(1H)-pyrazinone
SMILES O=C1NC=C(N=C1Br)C

Computational Chemistry Data

TPSA 45.75
LogP 0.84082
H_Acceptors 2
H_Donors 1
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 Aliphatic heterocycle compounds Other aliphatic heterocycles compounds

Key Words

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3-Bromo-5-methylpyrazin-2(1H)-one

CAS No. 1260810-61-4

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