1-Hydroxy-7-azabenzotriazole, AR
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About 1-Hydroxy-7-azabenzotriazole, AR
1-Hydroxy-7-azabenzotriazole, AR sits in our peptide Synthesis Reagents section and ships worldwide from stock or short lead time. Identity at a glance (AR): CAS 39968-33-7, formula C5H4N4O and molar mass 136.11 g/mol.
Use cases we see most often
- Peptide coupling
- Solid-phase peptide synthesis
- Bioconjugation
Storage and safety notes
Classified under GHS with signal word Danger and hazard statements H204, H301, H302 and H315. Read the SDS before first use.
Standard pack sizes are 1 g and 5 g, and custom quantities are quoted on request. You receive a batch certificate of analysis and a 16-section SDS with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Typical uses
- Peptide coupling
- Solid-phase peptide synthesis
- Bioconjugation
Applications
Grade guides
Specifications and identifiers
| Product name | 1-Hydroxy-7-azabenzotriazole, AR |
|---|---|
| Catalogue number | ZX-037750 |
| CAS number | 39968-33-7 |
| IUPAC name | 3-hydroxytriazolo[4,5-b]pyridine |
| Molecular formula | C5H4N4O |
| Molar mass | 136.11 g/mol |
| Exact mass | 136.0385 |
| Grade | AR |
| XLogP3 | 0.5 |
| H-bond donors / acceptors | 1 / 4 |
| Topological polar surface area | 63.8 Ų |
| HS code | 29270090 |
| InChIKey | FPIRBHDGWMWJEP-UHFFFAOYSA-N |
| SMILES | C1=CC2=C(N=C1)N(N=N2)O |
| PubChem CID | 181649 |
| Synonyms | 7-Aza-1-hydroxybenzotriazole, 3H-[1,2,3]triazolo[4,5-b]pyridin-3-ol, 3H-1,2,3-Triazolo[4,5-b]pyridine, 3-hydroxy-, 1-hydroxyl-7-azabenzotriazole, 3H-(1,2,3)triazolo(4,5-b)pyridin-3-ol, 1,2,3-triazolo[5,4-b]pyridin-3-ol, [1,2,3]Triazolo[4,5-b]pyridin-3-ol, HOAt 1-Hydroxy-7-azabenzotriazole, 3H-1,2,3-triazolo[4,5-b]pyridine-3-ol, 3H-1,2,3-Triazolo(4,5-b)pyridine, 3-hydroxy-, 1-Hydroxy-7-azabenzotriazole (HOAt), HOAT [1-Hydroxy-7-azabenzotriazole] |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H204Fire or projection hazard
- H301Toxic if swallowed
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements P210, P230, P234, P236, P240, P250, P261, P264, P264 + P265, P270, P271, P280, P301 + P316, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P317, P319, P321, P330, P332 + P317, P337 + P317
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 1 g | Quoted on request | |
| 5 g | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
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Other grades with CAS 39968-33-7
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