5-Chloropyridazin-3(2H)-one

Name: 5-Chloropyridazin-3(2H)-one
Brand: ChemScene
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CAS No. 660425-07-0
Cat. No. CS-W003825
Purity≥97%
MDL No.MFCD12198134

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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+

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

There is a HazMat shipping fee for each item that qualifies as a dangerous good. Please contact our quotation team via email to confirm the details.

*For research and further manufacturing use only, not for direct human use.

Structure of 660425-07-0

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Description

5-Chloropyridazin-3(2H)-one is a bench-stable heterocyclic compound featuring a chlorine atom at the 5-position and a lactam functionality at the 3-position. This electron-deficient core integrates readily into synthetic scaffolds for medicinal chemistry, offering enhanced solubility and stability in aqueous environments.

Application

5-Chloropyridazin-3(2H)-one serves as a versatile building block in medicinal chemistry, enabling efficient construction of pyridazinone-based scaffolds. Its chlorine substituent facilitates nucleophilic displacement reactions, supporting the introduction of diverse amine and heterocyclic side chains. The compound exhibits good bench stability and is compatible with standard purification methods, making it well-suited for iterative synthesis campaigns in API development.

General Information

CAS No. 660425-07-0
Cat. No. CS-W003825
Purity ≥97%
MDL No. MFCD12198134
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₃ClN₂O
Molecular Weight 130.53
Synonym(s) None
SMILES O=C1C=C(Cl)C=NN1

Computational Chemistry Data

TPSA 45.75
LogP 0.4233
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-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

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Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrimidine compounds

Key Words

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5-Chloropyridazin-3(2H)-one

CAS No. 660425-07-0

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