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Heterocyclic Building Blocks

Triazoles, Tetrazoles & Triazines

1,2,4-Triazoles, benzotriazoles, tetrazoles and triazines for antifungal APIs, peptide coupling reagents, corrosion inhibition and materials.
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Triazoles, tetrazoles and triazines are nitrogen-rich rings with uses from medicine to corrosion protection. This sub-category supplies parent heterocycles, salts and derived reagents. Examples include 1,2,4-Triazole and its sodium salt, used in azole antifungal synthesis, 1,2,4-Triazol-5-one, 1,2,3-Benzotriazin-4(3H)-one, the coupling reagent BOP ((Benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate) and the melem-type triamine heptazine.

Buyers of 1,2,4-triazole care about purity and water content, as the sodium salt is used in N-alkylation where regioselectivity between N-1 and N-4 matters. BOP is effective for amide coupling but produces HMPA as a by-product, so many labs now use safer alternatives. Some tetrazoles and azoles are energetic, so check transport and storage notes. We confirm any shipping limits when you request a quotation.

  • Triazoles for fluconazole-type antifungals
  • Benzotriazole reagents for peptide coupling
  • Heptazine and triazine units for carbon nitride materials

Each lot ships with a COA and SDS in sealed, moisture-proof packaging.

Triazoles, Tetrazoles & Triazines: questions buyers ask

Why does N-1 versus N-4 alkylation matter for 1,2,4-triazole?
1,2,4-Triazole can be alkylated on different nitrogens, giving isomers with different biological activity. Azole antifungals such as fluconazole need N-1 substitution. Using the sodium salt in a polar aprotic solvent and controlling temperature favours N-1, and the unwanted N-4 isomer is removed during purification.
Is BOP still a good choice for peptide coupling?
BOP couples efficiently with low racemisation, but it releases hexamethylphosphoramide, a suspected carcinogen. Many labs have switched to PyBOP or uronium reagents that avoid HMPA. BOP remains useful in specific procedures where it is validated. Handle it with care and dispose of waste as hazardous.
What are heptazine compounds used for?
Heptazine (tri-s-triazine) units are the building blocks of graphitic carbon nitride, a metal-free semiconductor used in photocatalysis for hydrogen production and pollutant degradation. Melem-type triamines serve as molecular precursors and model compounds for studying these materials and their condensation chemistry.

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