3-Bromo-1H-pyrazol-5-amine

CAS No. 950739-21-6
Cat. No. CS-B0747
Purity≥97%
MDL No.MFCD18801156

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Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
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Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
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Structure of 950739-21-6

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Description

3-Bromo-1H-pyrazol-5-amine features a bromine substituent at the 3-position and an amine group at the 5-position of the pyrazole ring, enabling direct functionalization in heterocyclic synthesis. This electron-deficient scaffold integrates readily into bioactive molecule design, offering high reactivity in palladium-catalyzed coupling reactions. The compound exhibits bench-stable handling under standard conditions and serves as a key intermediate in medicinal chemistry and materials science applications.

Application

3-Bromo-1H-pyrazol-5-amine serves as a versatile building block for heterocyclic synthesis, enabling palladium-catalyzed cross-coupling reactions to construct biologically relevant pyrazole derivatives. The bromo group facilitates efficient Suzuki, Stille, and Negishi couplings, while the primary amine offers direct functionalization potential. Its bench-stable crystalline form simplifies handling and purification, making it well-suited for medicinal chemistry campaigns and API intermediate development.

General Information

CAS No. 950739-21-6
Cat. No. CS-B0747
Purity ≥97%
MDL No. MFCD18801156
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₃H₄BrN₃
Molecular Weight 161.99
Synonym(s) 3-bromo-5-aminopyrazole
SMILES NC1=CC(Br)=NN1

Computational Chemistry Data

TPSA 54.7
LogP 0.7544
H_Acceptors 2
H_Donors 2
Rotatable_Bonds 0

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-H320-H335
Precautionary Statements : P261-P280-P302+P352

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Other Classifications

Building Blocks Functional Group Bromide

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Key Words

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3-Bromo-1H-pyrazol-5-amine

CAS No. 950739-21-6

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