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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

1,2,4-Triazole | CAS 288-88-0

A compact nitrogen heterocycle with three ring nitrogens and documented ambident N-alkylation chemistry, requiring clear separation of parent-compound identity, moisture control and downstream regioselectivity when assessing material for synthesis.

CAS288-88-0
Molecular formulaC2H3N3
Molecular weight69.07 g/mol

Product overview

The nitrogen atoms at positions 1, 2 and 4 define this five-membered aromatic ring and distinguish it from 1,2,3-triazole. The neutral, unsubstituted compound provides a scaffold for nitrogen functionalisation and coordination chemistry. Research on triazole anions shows that ion pairing and the reaction environment influence N-alkylation selectivity. Material qualification therefore treats ring identity, related heterocycles and water as starting-material controls, while the product isomer distribution is evaluated in the chosen reaction system. An enquiry should specify whether the required material is the neutral triazole or a particular salt.

Chemical identity

Chemical name
1,2,4-Triazole
CAS number
288-88-0
Molecular formula
C2H3N3
Molecular weight
69.07 g/mol

Application context

1,2,4-Triazole is used in studies of N-alkylation and as a nitrogen-containing building block for substituted triazoles. Its multiple nitrogen sites make regioselectivity an important part of route development; research has examined how ion pairing affects the product distribution. Triazole ligands also participate in transition-metal coordination chemistry. For derivatisation, define the parent or salt form and the water requirement of the intended reaction. For coordination work, identify the target ligand form and agree composition controls appropriate to the selected metal system.

Chemistry and synthetic role

Multiple nitrogen sites create alternative pathways for N-functionalisation and metal binding. They do not make 1,2,4-triazole equivalent to its 1,2,3 isomer, and a resulting N-substituted product must have its own positional assignment.

Quality review

Verify the nitrogen-ring pattern

Use identity evidence that distinguishes 1,2,4-triazole from 1,2,3-triazole and substituted analogues.

Separate water from HPLC purity

External specifications measure these independently. Agree both methods and reporting bases where charge calculation or reaction conditions require them.

Define the chemical form

Confirm the neutral triazole required by the route. For a salt or labelled material, specify the counterion or isotope composition in the order description.

Preparing a specification

Specify neutral 1,2,4-triazole, CAS 288-88-0, identity and assay methods, water and relevant related heterocycles. If a downstream regioselectivity test is required, define it as a separate process-qualification criterion.

Packaging and storage

Packaging format, closure and net weight should be agreed for the selected grade, order quantity and destination. Request the actual supplier SDS and confirm its storage and transport instructions before receipt.

Documentation

Request COA, SDS, chromatographic method and water result as appropriate. Confirm whether identity spectra and information on salt content or residual inorganic material are available when required by the intended coordination or alkylation chemistry.

Procurement questions

Is it interchangeable with 1,2,3-triazole?

No. The positions of the nitrogen atoms differ.

What affects N-alkylation regioselectivity?

Ion pairing and the reaction environment can alter product distribution; assess selectivity in the intended reaction alongside starting-material quality.

Does the entry cover a potassium salt or isotope-labelled standard?

No. Those forms require their own identity and specification.

Technical sources
  1. PubChem CID 9257NCBI / PubChem
  2. 1,2,4-Triazole T46108Sigma-Aldrich
  3. Taming Ambident Triazole Anions: Regioselective Ion Pairing Catalyzes Direct N-Alkylation with Atypical RegioselectivityPrimary research indexed by PubMed
  4. 1,2,4-1H-Triazole product specification 139285000Thermo Fisher Scientific