2H-1,2,3-Triazole-2-acetic acid

Name: 2H-1,2,3-Triazole-2-acetic acid
Brand: ChemScene
Availability: OutOfStock
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CAS No. 4320-91-6
Cat. No. CS-W021699
Purity≥98%
MDL No.MFCD03840810

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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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2H-1,2,3-Triazole-2-acetic acid|CS-W021699

Structure of 4320-91-6

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General Information

CAS No. 4320-91-6
Cat. No. CS-W021699
Purity ≥98%
MDL No. MFCD03840810
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₅N₃O₂
Molecular Weight 127.10
Synonym(s) AP8Impurity
SMILES O=C(O)CN1N=CC=N1

Description

2H-1,2,3-Triazole-2-acetic acid features a robust triazole core paired with a carboxylic acid functional group, enabling direct conjugation in bioconjugation and medicinal chemistry applications. The molecule exhibits high stability under standard reaction conditions and integrates seamlessly into peptide and small-molecule scaffolds.

Application

2H-1,2,3-Triazole-2-acetic acid serves as a versatile building block in medicinal chemistry and bioconjugation, offering a stable triazole core with a pendant carboxylic acid for derivatization. Its robustness under physiological conditions and compatibility with standard coupling reactions enable efficient synthesis of peptide conjugates, macrocyclic architectures, and targeted therapeutics. The molecule’s defined reactivity profile supports reliable functionalization without compromising scaffold integrity.

Synthesis

Route1
- In-stock
  
  4320-90-5
- ~78%
- 4320-91-6
References
- PFIZER LIMITED Patent: WO2006/123242 A1, 2006 ; Location in patent: Page/Page column 35 ; WO 2006/123242 A1

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

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Computational Chemistry Data

TPSA 68.01
LogP -0.6373
H_Acceptors 4
H_Donors 1
Rotatable_Bonds 2

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Triazole compounds

Key Words

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2H-1,2,3-Triazole-2-acetic acid

CAS No. 4320-91-6

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