1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one
1,2,4-三唑并[4,3-a]吡啶-3(2H)-酮
Also known as: [1,2,4]Triazolo[4,3-a]pyridin-3(2H)-one, 1,2,4-Triazol-(4,3-a)-pyridine 3(2H)-one, 1,2,4-Triazole(4,3)pyridin-3-(2H)-one, 1,2,4-Triazolo-[4,3-a]pyridine-3(2H)-one, 1,2,4-Triazole-(4,3-alpha)pyridine, 1,2,4-Triazolopyridin-3-one, 2H-[1,2,4]triazolo[4,3-a]pyridin-3-one, 3-Hydroxy-1,2,4-triazolo[4,3-a]pyridine, 3-Hydroxytriazolo[4,3-a]pyridine, Trazodone Impurity 15
1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one (CAS 6969-71-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H5N3O and a molecular weight of 135.123 g/mol. It is also known as [1,2,4]Triazolo[4,3-a]pyridin-3(2H)-one, 1,2,4-Triazol-(4,3-a)-pyridine 3(2H)-one and 1,2,4-Triazole(4,3)pyridin-3-(2H)-one. Key properties include a melting point of 231°C and a density of 1.5±0.1 g/cm3. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6969-71-7
- Jingsj CID
- J-897989-0
- Molecular Formula
- C6H5N3O
- Chinese Name
- 1,2,4-三唑并[4,3-a]吡啶-3(2H)-酮
- Molecular Weight
- 135.123 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 231°C |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Exact Mass | 135.043259 |
| PSA | 50.16000 |
| LogP | -1.17 |
| Refractive Index | 1.739 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one?
The CAS number of 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one is 6969-71-7.
What are the molecular formula and molecular weight of 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one?
1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one has molecular formula C6H5N3O and molecular weight 135.123 g/mol.
Is 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one hazardous?
1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one?
For 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one, Upstream Products: 2-Chloropyridine, Semicarbazide hydrochloride, 2-Hydrazinopyridine; Downstream Products: 2-(3-Chloropropyl)-1,2,4-triazolo[4,3-a]pyridin-3(2H)-one, Trazodone.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one (CAS 6969-71-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-897989-0 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.