4-Azabenzimidazole
Also known as: 1H-Imidazo[4,5-b]pyridine, 4-Aza-1H-benzimidazole, 7-azabenzimidazole, 1-deazapurine, 3,4-diazaindole, pyrido(2,3-d)imidazole, imidazo(4,5-b)pyridine
4-Azabenzimidazole (CAS 273-21-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H5N3 and a molecular weight of 119.124 g/mol. Key properties include a melting point of 148-151 °C(lit.), a boiling point of 395.3±15.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 207.2±13.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 273-21-2
- Jingsj CID
- J-46716-3
- Molecular Formula
- C6H5N3
- Molecular Weight
- 119.124 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 148-151 °C(lit.) |
|---|---|
| Boiling Point | 395.3±15.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 207.2±13.3 °C |
| Exact Mass | 119.048347 |
| PSA | 41.57000 |
| LogP | 0.30 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.715 |
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 4-Azabenzimidazole?
The CAS number of 4-Azabenzimidazole is 273-21-2.
What are the molecular formula and molecular weight of 4-Azabenzimidazole?
4-Azabenzimidazole has molecular formula C6H5N3 and molecular weight 119.124 g/mol.
What are the upstream and downstream products of 4-Azabenzimidazole?
For 4-Azabenzimidazole, Upstream Products: 2,3-Diaminopyridine, Triethyl orthoformate, Carbon dioxide; Downstream Products: 6-Bromo-1H-imidazo[4,5-b]pyridine, 5,7-Dichloro-1H-imidazo[4,5-b]pyridine, 3-Methyl-3H-imidazo[4,5-b]pyridine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Azabenzimidazole (CAS 273-21-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46716-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.