5-Chloro-1H-pyrazol-3-amine

Name: 5-Chloro-1H-pyrazol-3-amine
Brand: ChemScene
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CAS No. 916211-79-5
Cat. No. CS-0050541
Molecule weight117.54
Purity≥95%
MDL No.MFCD19215351

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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+
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General Information

CAS No. 916211-79-5
Cat. No. CS-0050541
Purity ≥95%
MDL No. MFCD19215351
Storage 4°C, protect from light
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₃H₄ClN₃
Molecular Weight 117.54
Synonym(s) 3-Chloro-1H-pyrazol-5-aMine
SMILES NC1=NNC(Cl)=C1

Description

5-Chloro-1H-pyrazol-3-amine features a chlorinated pyrazole core with a primary amine at the 3-position, enabling direct incorporation into diverse heterocyclic scaffolds. This bench-stable, moisture-tolerant building block facilitates efficient access to bioactive compounds through coupling reactions and serves as a key intermediate in medicinal chemistry and agrochemical development.

Application

5-Chloro-1H-pyrazol-3-amine serves as a versatile building block in medicinal chemistry, enabling efficient access to substituted pyrazole scaffolds via cross-coupling and nucleophilic displacement reactions. The chloro group at the C5 position provides a reliable handle for palladium-catalyzed transformations, while the primary amine functionality supports direct derivatization or incorporation into heterocyclic systems. Its bench-stable solid form facilitates handling and purification, making it well-suited for iterative synthesis workflows in API development.

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

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Computational Chemistry Data

TPSA 54.7
LogP 0.6453
H_Acceptors 2
H_Donors 2
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Chloride

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Key Words

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5-Chloro-1H-pyrazol-3-amine

CAS No. 916211-79-5

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