4-(4,5-dihydro-1H-imidazol-2-yl)pyridine

4-(4,5-二氢-1H-咪唑-2-基)吡啶

Also known as: 2-(4-Pyridyl)imidazoline, 4-(4,5-Dihydroimidazol-2-yl)-pyridine, 2-(4-PYRIDYL) CYCLO FORMANIZINE, Pyridine, 4-(4,5-dihydro-1H-imidazol-2-yl)-

4-(4,5-dihydro-1H-imidazol-2-yl)pyridine (CAS 21381-61-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H9N3 and a molecular weight of 147.17700 g/mol. It is also known as 2-(4-Pyridyl)imidazoline, 4-(4,5-Dihydroimidazol-2-yl)-pyridine and 2-(4-PYRIDYL) CYCLO FORMANIZINE. Key properties include a boiling point of 277.8ºC at 760 mmHg, a density of 1.24g/cm3 and a flash point of 121.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21381-61-3
Jingsj CID
J-1318661-6
Molecular Formula
C8H9N3
Chinese Name
4-(4,5-二氢-1H-咪唑-2-基)吡啶
Molecular Weight
147.17700 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point277.8ºC at 760 mmHg
Density1.24g/cm3
Flash Point121.8ºC

Frequently Asked Questions

What is the CAS number of 4-(4,5-dihydro-1H-imidazol-2-yl)pyridine?

The CAS number of 4-(4,5-dihydro-1H-imidazol-2-yl)pyridine is 21381-61-3.

What are the molecular formula and molecular weight of 4-(4,5-dihydro-1H-imidazol-2-yl)pyridine?

4-(4,5-dihydro-1H-imidazol-2-yl)pyridine has molecular formula C8H9N3 and molecular weight 147.17700 g/mol.

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

Last updated:

How to cite: Jingsj. "4-(4,5-dihydro-1H-imidazol-2-yl)pyridine (CAS 21381-61-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1318661-6 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.