6-Bromo-2-methylpyridazin-3(2H)-one

Name: 6-Bromo-2-methylpyridazin-3(2H)-one
Brand: ChemScene
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CAS No. 1123169-25-4
Cat. No. CS-0035801
Purity≥98%
MDL No.MFCD12198437

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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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6-Bromo-2-methylpyridazin-3(2H)-one|CS-0035801

Structure of 1123169-25-4

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General Information

CAS No. 1123169-25-4
Cat. No. CS-0035801
Purity ≥98%
MDL No. MFCD12198437
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₅BrN₂O
Molecular Weight 189.01
Synonym(s) 6-bromo-2-methylpyridazin-3-one
SMILES CN1C(=O)C=CC(=N1)Br

Description

6-Bromo-2-methylpyridazin-3(2H)-one features a brominated pyridazinone core with a methyl group at the 2-position, offering a sterically accessible site for cross-coupling and functionalization. This bench-stable heterocycle integrates readily into medicinal chemistry campaigns, serving as a building block for bioactive molecules requiring electron-deficient aromatic systems.

Application

6-Bromo-2-methylpyridazin-3(2H)-one serves as a versatile heterocyclic building block for medicinal chemistry and process development. Its bromine substituent enables palladium-catalyzed cross-coupling reactions, while the pyridazinone core offers hydrogen-bonding capacity and metabolic stability. The 2-methyl group enhances solubility and modulates electronic properties. This compound exhibits excellent bench stability, facilitates straightforward purification, and functions reliably in standard coupling and functionalization 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-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

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Computational Chemistry Data

TPSA 34.89
LogP 0.5428
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyridazine compounds

Key Words

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6-Bromo-2-methylpyridazin-3(2H)-one

CAS No. 1123169-25-4

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