2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one

Also known as: 2-benzyl-4-chloro-5-methoxy-2H-pyridazin-3-one, 2-BENZYL-4-CHLORO-5-METHOXY-3(2H)-PYRIDAZINONE, 2-benzyl-4-chloro-5-methoxypyridazin-3-one, 3(2H)-Pyridazinone, 4-chloro-5-methoxy-2-(phenylmethyl)-

2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one (CAS 40890-47-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C12H11ClN2O2 and a molecular weight of 250.68100 g/mol. Key properties include a boiling point of 395.5ºC at 760 mmHg, a density of 1.27g/cm3 and a flash point of 193ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40890-47-9
Jingsj CID: J-1071885-1
Molecular Formula: C₁₂H₁₁ClN₂O₂
Molecular Weight: 250.68100 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	395.5ºC at 760 mmHg
Density	1.27g/cm3
Flash Point	193ºC
Exact Mass	250.05100
PSA	44.12000
LogP	1.95360
Refractive Index	1.591

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 2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one?

The CAS number of 2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one is 40890-47-9.

What are the molecular formula and molecular weight of 2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one?

2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one has molecular formula C12H11ClN2O2 and molecular weight 250.68100 g/mol.

What are the upstream and downstream products of 2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one?

For 2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one, Upstream Products: Sodium methoxide, 2-Benzyl-4,5-dichloropyridazin-3(2H)-one, Methanol.

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. "2-benzyl-4-chloro-5-methoxypyridazin-3(2H)-one (CAS 40890-47-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1071885-1 (accessed 2026-11-09).

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