4-Amino-6-chloropyridazin-3(2H)-one

Name: 4-Amino-6-chloropyridazin-3(2H)-one
Brand: ChemScene
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CAS No. 14704-64-4
Cat. No. CS-0135326
Purity≥95%
MDL No.MFCD11109440

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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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4-Amino-6-chloropyridazin-3(2H)-one|CS-0135326

Structure of 14704-64-4

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Description

4-Amino-6-chloropyridazin-3(2H)-one features a fused heterocyclic core with complementary electron-rich and electrophilic sites, enabling direct functionalization in medicinal chemistry. The amino group facilitates coupling reactions, while the chloro substituent serves as a regioselective handle for nucleophilic substitution under mild conditions. This scaffold exhibits favorable solubility and stability under standard bench protocols, making it a practical building block for targeted library synthesis.

Application

4-Amino-6-chloropyridazin-3(2H)-one serves as a versatile building block in medicinal chemistry, enabling efficient access to substituted pyridazinones via nucleophilic displacement or cross-coupling. The chloro group facilitates direct functionalization under mild conditions, while the amino and carbonyl functionalities provide orthogonal handles for further derivatization. Bench-stable and readily purified by recrystallization, it functions effectively in standard synthetic workflows for heterocyclic scaffold development.

General Information

CAS No. 14704-64-4
Cat. No. CS-0135326
Purity ≥95%
MDL No. MFCD11109440
Storage 4°C, protect from light
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₄ClN₃O
Molecular Weight 145.55
Synonym(s) 4-amino-6-chloro-3(2H)-Pyridazinone
SMILES O=C1C(N)=CC(Cl)=NN1

Computational Chemistry Data

TPSA 71.77
LogP 0.0055
H_Acceptors 3
H_Donors 2
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-P405-P501

Quality Control

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Other Classifications

Building Blocks Functional Group Chloride

Building Blocks Skeleton Aromatic heterocycle compounds Pyridazine compounds

Key Words

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4-Amino-6-chloropyridazin-3(2H)-one

CAS No. 14704-64-4

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