1H-1,2,3-triazolo[4,5-b]pyridine

Also known as: 4-azabenzotriazole, 7-azabenzotriazole, 2,7-diazabenzimidazole, 2,7-diaza-1H-benzimidazole, 1H-v-triazolo[4,5-b]pyridine, 3H-[1,2,3]triazolo[4,5-b]pyridine, tetrazaindene

1H-1,2,3-triazolo[4,5-b]pyridine (CAS 273-34-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4N4 and a molecular weight of 120.11200 g/mol. Key properties include a melting point of 208 °C (dec.)(lit.), a boiling point of 303.4ºC at 760 mmHg, a density of 1.472 g/cm3 and a flash point of 152.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 273-34-7
Jingsj CID: J-17981-7
Molecular Formula: C₅H₄N₄
Molecular Weight: 120.11200 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	208 °C (dec.)(lit.)
Boiling Point	303.4ºC at 760 mmHg
Density	1.472 g/cm3
Flash Point	152.9ºC
Exact Mass	120.04400
PSA	54.46000
LogP	0.35290
Vapor Pressure	0.376mmHg at 25°C
Refractive Index	1.828

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 1H-1,2,3-triazolo[4,5-b]pyridine?

The CAS number of 1H-1,2,3-triazolo[4,5-b]pyridine is 273-34-7.

What are the molecular formula and molecular weight of 1H-1,2,3-triazolo[4,5-b]pyridine?

1H-1,2,3-triazolo[4,5-b]pyridine has molecular formula C5H4N4 and molecular weight 120.11200 g/mol.

What are the upstream and downstream products of 1H-1,2,3-triazolo[4,5-b]pyridine?

For 1H-1,2,3-triazolo[4,5-b]pyridine, Upstream Products: 6-Chloro-1H-[1,2,3]triazolo[4,5-b]pyridine, 5-chloropyridine-2,3-diamine, 2-Amino-5-chloro-3-nitropyridine; Downstream Products: 1-Acetyl-1H-1,2,3-triazolo[4,5-b]pyridine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1H-1,2,3-triazolo[4,5-b]pyridine (CAS 273-34-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17981-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.