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

5-甲基-6-氧代-1,6-二氢吡啶-3-羧酸

Also known as: 3-Pyridinecarboxylic acid, 1,6-dihydro-5-methyl-6-oxo-, 5-Methyl-6-oxo-1,6-dihydro-3-pyridinecarboxylic acid, 5-Methyl-6-oxo-1,6-dihydro-pyridine-3-carboxylic acid, 5-methyl-6-oxo-1H-pyridine-3-carboxylic acid, 6-Hydroxy-5-methylnicotinic acid, 6-Hydroxy-5-methylpyridine-3-carboxylic acid

5-Methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid (CAS 66909-27-1) 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 153.135 g/mol. It is also known as 3-Pyridinecarboxylic acid, 1,6-dihydro-5-methyl-6-oxo-, 5-Methyl-6-oxo-1,6-dihydro-3-pyridinecarboxylic acid and 5-Methyl-6-oxo-1,6-dihydro-pyridine-3-carboxylic acid. Key properties include a melting point of 327-329°C, a boiling point of 371.2±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 178.3±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
66909-27-1
Jingsj CID
J-989570-8
Molecular Formula
C7H7NO3
Chinese Name
5-甲基-6-氧代-1,6-二氢吡啶-3-羧酸
Molecular Weight
153.135 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point327-329°C
Boiling Point371.2±42.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point178.3±27.9 °C

Frequently Asked Questions

What is the CAS number of 5-Methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid?

The CAS number of 5-Methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid is 66909-27-1.

What are the molecular formula and molecular weight of 5-Methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid?

5-Methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid has molecular formula C7H7NO3 and molecular weight 153.135 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid (CAS 66909-27-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-989570-8 (accessed 2026-10-24).

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