6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one

Also known as: 1,2,4-Triazolo[4,3-b]pyridazin-3(2H)-one, 6-chloro-, 6-chloro-2H-[1,2,4]triazolo[4,3-b]pyridazin-3-one, 6-chloro-2H,3H-[1,2,4]triazolo[4,3-b]pyridazin-3-one

6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one (CAS 33050-32-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H3ClN4O and a molecular weight of 170.55700 g/mol. Key properties include a melting point of 265-275ºC and a density of 1.95g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 33050-32-7
Jingsj CID: J-1309616-7
Molecular Formula: C₅H₃ClN₄O
Molecular Weight: 170.55700 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	265-275ºC
Density	1.95g/cm3
Exact Mass	170.00000
PSA	63.05000
LogP	0.07100
Refractive Index	1.849
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 6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one?

The CAS number of 6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one is 33050-32-7.

What are the molecular formula and molecular weight of 6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one?

6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one has molecular formula C5H3ClN4O and molecular weight 170.55700 g/mol.

What are the upstream and downstream products of 6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one?

For 6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one, Upstream Products: 3,6-Dichloropyridazine, Semicarbazide hydrochloride; Downstream Products: 3,6-dichloro-[1,2,4]triazolo[4,3-b]pyridazine.

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. "6-Chloro[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one (CAS 33050-32-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1309616-7 (accessed 2026-11-09).

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