5-acetyl-6-methyl-2(1H)-pyridinone

Also known as: 5-acetyl-6-methyl-1H-pyridin-2-one, 5-acetyl-6-methylpyridin-2(1H)-one, 2(1H)-pyridinone,5-acetyl-6-methyl-, 5-acetyl-6-methyl-2-(1H)pyridone, acetylmethylpyridinone, SF 36

5-acetyl-6-methyl-2(1H)-pyridinone (CAS 5220-65-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H9NO2 and a molecular weight of 151.16300 g/mol. Key properties include a melting point of 203-205ºC, a boiling point of 349.7ºC at 760mmHg, a density of 1.138g/cm3 and a flash point of 168.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5220-65-5
Jingsj CID: J-1177917-2
Molecular Formula: C₈H₉NO₂
Molecular Weight: 151.16300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	203-205ºC
Boiling Point	349.7ºC at 760mmHg
Density	1.138g/cm3
Flash Point	168.5ºC
Exact Mass	151.06300
PSA	49.93000
LogP	0.88590
Refractive Index	1.508

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 5-acetyl-6-methyl-2(1H)-pyridinone?

The CAS number of 5-acetyl-6-methyl-2(1H)-pyridinone is 5220-65-5.

What are the molecular formula and molecular weight of 5-acetyl-6-methyl-2(1H)-pyridinone?

5-acetyl-6-methyl-2(1H)-pyridinone has molecular formula C8H9NO2 and molecular weight 151.16300 g/mol.

What are the upstream and downstream products of 5-acetyl-6-methyl-2(1H)-pyridinone?

For 5-acetyl-6-methyl-2(1H)-pyridinone, Upstream Products: 4-Aminopent-3-en-2-one, methyl propiolate, 5-Acetyl-6-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile; Downstream Products: 5-Acetyl-3-bromo-6-methyl-2(1H)-pyridinone, 5-Acetyl-3-chloro-6-methyl-1,2-dihydropyridin-2-one.

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. "5-acetyl-6-methyl-2(1H)-pyridinone (CAS 5220-65-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1177917-2 (accessed 2026-11-09).

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