2-chloro-5-cyanopyridine 1-oxide

6-氯-3-吡啶甲腈-1-氧化物

Also known as: 6-chloro-1-oxidopyridin-1-ium-3-carbonitrile, 3-Pyridinecarbonitrile,6-chloro-,1-oxide

2-chloro-5-cyanopyridine 1-oxide (CAS 401590-43-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H3ClN2O and a molecular weight of 154.55400 g/mol. It is also known as 6-chloro-1-oxidopyridin-1-ium-3-carbonitrile and 3-Pyridinecarbonitrile,6-chloro-,1-oxide. Key properties include a boiling point of 397.818ºC at 760 mmHg, a density of 1.349 g/cm3 and a flash point of 194.394ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
401590-43-0
Jingsj CID
J-1158556-1
Molecular Formula
C6H3ClN2O
Chinese Name
6-氯-3-吡啶甲腈-1-氧化物
Molecular Weight
154.55400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point397.818ºC at 760 mmHg
Density1.349 g/cm3
Flash Point194.394ºC

Frequently Asked Questions

What is the CAS number of 2-chloro-5-cyanopyridine 1-oxide?

The CAS number of 2-chloro-5-cyanopyridine 1-oxide is 401590-43-0.

What are the molecular formula and molecular weight of 2-chloro-5-cyanopyridine 1-oxide?

2-chloro-5-cyanopyridine 1-oxide has molecular formula C6H3ClN2O and molecular weight 154.55400 g/mol.

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

Last updated:

How to cite: Jingsj. "2-chloro-5-cyanopyridine 1-oxide (CAS 401590-43-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1158556-1 (accessed 2026-10-25).

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