5-Ethynyl-1H-1,2,3-triazole

Name: 5-Ethynyl-1H-1,2,3-triazole
Brand: ChemScene
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CAS No. 119720-87-5
Cat. No. CS-0611682
Purity≥98%
MDL No.None

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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+
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Structure of 119720-87-5

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Description

5-Ethynyl-1H-1,2,3-triazole features a terminal alkyne group conjugated to a stable triazole ring, enabling efficient copper-catalyzed azide-alkyne cycloaddition (CuAAC). This scaffold integrates readily into bioconjugation workflows and polymer architectures, offering high reaction fidelity under mild conditions.

Application

5-Ethynyl-1H-1,2,3-triazole serves as a versatile building block in copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, enabling efficient access to triazole-linked scaffolds. Its terminal alkyne functionality exhibits high reactivity and compatibility with diverse functional groups, facilitating rapid conjugation under mild conditions. The compound demonstrates excellent bench stability and ease of purification, making it well-suited for use in medicinal chemistry, chemical biology, and materials science applications.

General Information

CAS No. 119720-87-5
Cat. No. CS-0611682
Purity ≥98%
MDL No. None
Storage 4°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₃N₃
Molecular Weight 93.09
Synonym(s) None
SMILES C#CC1=CN=NN1

Computational Chemistry Data

TPSA 41.57
LogP -0.214
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 : H315-H319
Precautionary Statements : P264-P280-P302+P352-P362

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Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Triazole compounds

Life Science Click Chemistry Reagents Alkyne

Chemical Biology Pharmaceutical Development and Drug Discovery Research Conjugation Chemistry/Click Chemistry Terminal Alkynes

Chemical Biology Conjugation Chemistry/Click Chemistry Terminal Alkynes

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5-Ethynyl-1H-1,2,3-triazole

CAS No. 119720-87-5

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