5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one

Also known as: 5-Chloro-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one, 2H-Imidazo[4,5-b]pyridin-2-one, 5-chloro-1,3-dihydro-, 5-Chloro-1,3-dihydroimidazo[4,5-b]pyridin-2-one, 5-Chloro-1H,2H,3H-imidazo[4,5-b]pyridin-2-one, 5-Chloro-3H-imidazo[4,5-b]pyridin-2-ol

5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one (CAS 40851-98-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4ClN3O and a molecular weight of 169.568 g/mol. Key properties include a boiling point of 184.5±28.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 65.4±24.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40851-98-7
Jingsj CID: J-1316116-5
Molecular Formula: C₆H₄ClN₃O
Molecular Weight: 169.568 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	184.5±28.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	65.4±24.0 °C
Exact Mass	169.004288
PSA	61.54000
LogP	0.88
Vapor Pressure	0.7±0.4 mmHg at 25°C
Refractive Index	1.612
Storage Conditions	2-8°C

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 5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one?

The CAS number of 5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one is 40851-98-7.

What are the molecular formula and molecular weight of 5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one?

5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one has molecular formula C6H4ClN3O and molecular weight 169.568 g/mol.

What are the upstream and downstream products of 5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one?

For 5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one, Upstream Products: 6-Chloropyridine-2,3-diamine, Bis(trichloromethyl) carbonate, 1,1'-Carbonyldiimidazole; Downstream Products: 5-chloro-3-methyl-1H-imidazo[4,5-b]pyridin-2(3H)-one.

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. "5-Chloro-1H-imidazo[4,5-b]pyridin-2(3H)-one (CAS 40851-98-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1316116-5 (accessed 2026-11-09).

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