3,5-Dichloro-4-pyridinol

3,5-二氯-4-羟基吡啶

Also known as: 3,5-Dichloro-4(1H)-pyridinone, 3,5-Dichloropyridin-4-ol, 3,5-Dichloro-4-pyridone, 3,5-Dichloro-1,4-dihydropyridin-4-one, 4-Pyridinol, 3,5-dichloro-, 4(1H)-Pyridinone, 3,5-dichloro-

3,5-Dichloro-4-pyridinol (CAS 17228-70-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3Cl2NO and a molecular weight of 163.989 g/mol. It is also known as 3,5-Dichloro-4(1H)-pyridinone, 3,5-Dichloropyridin-4-ol and 3,5-Dichloro-4-pyridone. Key properties include a melting point of 56-59 °C(lit.), a boiling point of 317.5±37.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 145.8±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
17228-70-5
Jingsj CID
J-35334-8
Molecular Formula
C5H3Cl2NO
Chinese Name
3,5-二氯-4-羟基吡啶
Molecular Weight
163.989 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point56-59 °C(lit.)
Boiling Point317.5±37.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point145.8±26.5 °C

Frequently Asked Questions

What is the CAS number of 3,5-Dichloro-4-pyridinol?

The CAS number of 3,5-Dichloro-4-pyridinol is 17228-70-5.

What are the molecular formula and molecular weight of 3,5-Dichloro-4-pyridinol?

3,5-Dichloro-4-pyridinol has molecular formula C5H3Cl2NO and molecular weight 163.989 g/mol.

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

Last updated:

How to cite: Jingsj. "3,5-Dichloro-4-pyridinol (CAS 17228-70-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35334-8 (accessed 2026-10-23).

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