5,8-Dichloropyrido[2,3-d]pyridazine

5,8-二氯吡啶并[2,3-d]哒嗪

Also known as: 5,8-Dichloropyrido[3,2-d]pyridazine, 1,4-Dichloro-5-azaphthalazine, Pyrido[2,3-d]pyridazine, 5,8-dichloro-, 5,8-Dichloropyrido[2,3-d]pyridazine

5,8-Dichloropyrido[2,3-d]pyridazine (CAS 703-33-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H3Cl2N3 and a molecular weight of 200.02500 g/mol. It is also known as 5,8-Dichloropyrido[3,2-d]pyridazine, 1,4-Dichloro-5-azaphthalazine and Pyrido[2,3-d]pyridazine, 5,8-dichloro-. Key properties include a melting point of 169℃, a boiling point of 419.5ºC at 760 mmHg, a density of 1.573g/cm3 and a flash point of 240ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
703-33-3
Jingsj CID
J-1499905-7
Molecular Formula
C7H3Cl2N3
Chinese Name
5,8-二氯吡啶并[2,3-d]哒嗪
Molecular Weight
200.02500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point169℃
Boiling Point419.5ºC at 760 mmHg
Density1.573g/cm3
Flash Point240ºC

Frequently Asked Questions

What is the CAS number of 5,8-Dichloropyrido[2,3-d]pyridazine?

The CAS number of 5,8-Dichloropyrido[2,3-d]pyridazine is 703-33-3.

What are the molecular formula and molecular weight of 5,8-Dichloropyrido[2,3-d]pyridazine?

5,8-Dichloropyrido[2,3-d]pyridazine has molecular formula C7H3Cl2N3 and molecular weight 200.02500 g/mol.

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

Last updated:

How to cite: Jingsj. "5,8-Dichloropyrido[2,3-d]pyridazine (CAS 703-33-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1499905-7 (accessed 2026-10-22).

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