6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid

Also known as: 6-Methyl-4(1H)-pyridone-3-carboxylic acid, 4-Hydroxy-6-methylnicotinic acid, 1,4-Dihydro-6-methyl-4-oxopyridine-3-carboxylic acid, 6-Methyl-4-oxo-1,4-dihydro-3-pyridinecarboxylic acid, 6-Methyl-4-oxo-1H-pyridine-3-carboxylic acid

6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid (CAS 33821-58-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H7NO3 and a molecular weight of 153.13500 g/mol. Key properties include a boiling point of 311.056ºC at 760 mmHg, a density of 1.346 g/cm3 and a flash point of 141.922ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 33821-58-8
Jingsj CID: J-1493861-5
Molecular Formula: C₇H₇NO₃
Molecular Weight: 153.13500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	311.056ºC at 760 mmHg
Density	1.346 g/cm3
Flash Point	141.922ºC
Exact Mass	153.04300
PSA	70.16000
LogP	0.38150

Frequently Asked Questions

What is the CAS number of 6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid?

The CAS number of 6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid is 33821-58-8.

What are the molecular formula and molecular weight of 6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid?

6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid has molecular formula C7H7NO3 and molecular weight 153.13500 g/mol.

What are the upstream and downstream products of 6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid?

For 6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid, Upstream Products: Ethyl 2,4-dichloro-6-methylnicotinate, Ethyl 4-hydroxy-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylate, ethyl 2-chloro-4-ethoxy-6-methylpyridine-3-carboxylate.

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. "6-Methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acid (CAS 33821-58-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1493861-5 (accessed 2026-11-09).

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