2,5-pyridinediol

Also known as: 5-Hydroxy-2(1H)-pyridinone, 5-Hydroxy-2-pyridone, 5-Hydroxypyridin-2(1H)-one, 6-Hydroxy-3-pyridinol, 2,5-Dihydroxypyridine, 2,5-Pyridinediol, NSC 224189, pyridine-2,5-diol

2,5-pyridinediol (CAS 5154-01-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NO2 and a molecular weight of 111.099 g/mol. Key properties include a melting point of 250-260ºC, a boiling point of 441.4±25.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 220.8±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5154-01-8
Jingsj CID: J-1135801-3
Molecular Formula: C₅H₅NO₂
Molecular Weight: 111.099 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	250-260ºC
Boiling Point	441.4±25.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	220.8±23.2 °C
Exact Mass	111.032028
PSA	53.35000
LogP	-0.83
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.625

Customs & Trade Information

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. 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 2,5-pyridinediol?

The CAS number of 2,5-pyridinediol is 5154-01-8.

What are the molecular formula and molecular weight of 2,5-pyridinediol?

2,5-pyridinediol has molecular formula C5H5NO2 and molecular weight 111.099 g/mol.

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. "2,5-pyridinediol (CAS 5154-01-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1135801-3 (accessed 2026-11-09).

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