3-Chloro-1H-pyrazol-4-amine hydrochloride

Name: 3-Chloro-1H-pyrazol-4-amine hydrochloride
Brand: ChemScene
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CAS No. 63680-90-0
Cat. No. CS-0090470
Purity≥96%
MDL No.MFCD01693693

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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-Chloro-1H-pyrazol-4-amine hydrochloride|CS-0090470

Structure of 63680-90-0

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Description

3-Chloro-1H-pyrazol-4-amine hydrochloride features a pyrazole core with a chlorine substituent at the 3-position and a primary amine at the 4-position, delivering enhanced reactivity for C–N bond formation. The hydrochloride salt ensures high solubility in aqueous media and improved shelf stability under standard conditions. This compound serves as a key intermediate in medicinal chemistry, enabling rapid access to functionalized heterocycles through coupling reactions.

Application

3-Chloro-1H-pyrazol-4-amine hydrochloride serves as a versatile building block for heterocyclic synthesis, enabling efficient access to substituted pyrazole scaffolds via palladium-catalyzed coupling and electrophilic functionalization. The chloro group at the 3-position facilitates C–Cl bond activation in cross-coupling reactions, while the amino functionality supports direct derivatization or incorporation into bioactive molecules. Its crystalline solid form ensures bench stability and ease of handling, with purification achievable through simple recrystallization.

General Information

CAS No. 63680-90-0
Cat. No. CS-0090470
Purity ≥96%
MDL No. MFCD01693693
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₃H₅Cl₂N₃
Molecular Weight 154.00
Synonym(s) 4-Amino-5-chloropyrazole Hydrochloride
SMILES NC1=CNN=C1Cl.[H]Cl

Computational Chemistry Data

TPSA 54.7
LogP 1.0671
H_Acceptors 2
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-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

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Other Classifications

Building Blocks Functional Group Chloride

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Key Words

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3-Chloro-1H-pyrazol-4-amine hydrochloride

CAS No. 63680-90-0

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