1-Hydroxy-7-azabenzotriazole

For research use only. Not for therapeutic Use.

  • CAT Number: R007295
  • CAS Number: 39968-33-7
  • Molecular Formula: C5H4N4O
  • Molecular Weight: 136.11
  • Purity: ≥95%
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1-Hydroxy-7-azabenzotriazole (Cat No.: R007295) is a heterocyclic compound widely used in peptide synthesis to improve coupling efficiency and minimize racemization. As a coupling additive, HOAt enhances the reactivity of carbodiimide-based reagents such as DIC or EDC by forming a reactive intermediate that facilitates amide bond formation. Its structure, featuring a triazole ring with a hydroxyl group, contributes to its nucleophilicity and stability. HOAt is preferred in solid-phase peptide synthesis (SPPS) for producing high-purity peptides and complex biomolecules with improved yields.


CAS Number 39968-33-7
Synonyms

[1,2,3]Triazolo[4,5-b]pyridin-3-ol; 1H-[1,2,3]triazolo[4,5-b]pyridine 3-Oxide; HOAt.

Molecular Formula C5H4N4O
Purity ≥95%
Storage -20°C
IUPAC Name 3-hydroxytriazolo[4,5-b]pyridine
InChI InChI=1S/C5H4N4O/c10-9-5-4(7-8-9)2-1-3-6-5/h1-3,10H
InChIKey FPIRBHDGWMWJEP-UHFFFAOYSA-N
SMILES C1=CC2=C(N=C1)N(N=N2)O
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