2,5-Dichloro-4-pyridinecarboxaldehyde

2,5-二氯吡啶-4-甲醛

Also known as: 2,5-Dichloroisonicotinaldehyde, 2,5-Dichloro-4-formylpyridine, 2,5-Dichloropyridine-4-carboxaldehyde, 2,5-Dichloropyridine-4-carbaldehyde, 4-Pyridinecarboxaldehyde, 2,5-dichloro-

2,5-Dichloro-4-pyridinecarboxaldehyde (CAS 102645-33-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H3Cl2NO and a molecular weight of 176.000 g/mol. It is also known as 2,5-Dichloroisonicotinaldehyde, 2,5-Dichloro-4-formylpyridine and 2,5-Dichloropyridine-4-carboxaldehyde. Key properties include a melting point of 73-74ºC, a boiling point of 256.3±35.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 108.8±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 102645-33-0
Jingsj CID: J-1430573-3
Molecular Formula: C₆H₃Cl₂NO
Chinese Name: 2,5-二氯吡啶-4-甲醛
Molecular Weight: 176.000 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	73-74ºC
Boiling Point	256.3±35.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	108.8±25.9 °C

Frequently Asked Questions

What is the CAS number of 2,5-Dichloro-4-pyridinecarboxaldehyde?

The CAS number of 2,5-Dichloro-4-pyridinecarboxaldehyde is 102645-33-0.

What are the molecular formula and molecular weight of 2,5-Dichloro-4-pyridinecarboxaldehyde?

2,5-Dichloro-4-pyridinecarboxaldehyde has molecular formula C6H3Cl2NO and molecular weight 176.000 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2,5-Dichloro-4-pyridinecarboxaldehyde (CAS 102645-33-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1430573-3 (accessed 2026-10-25).

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