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1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid

Also known as: 1-Methyl-2-oxo-1,2-dihydro-4-pyridinecarboxylic acid, 1-Methyl-2-oxopyridine-4-carboxylic acid, 1-Methyl-1H-pyridin-2-one-4-carboxylic acid, 1-Methyl-2-oxo-1,2-dihydro-pyridine-4-carboxylic acid, 1-Methyl-6-oxohydropyridine-4-carboxylic acid, 1-Methylthyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid, 4-Pyridinecarboxylic acid, 1,2-dihydro-1-methyl-2-oxo-

1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 33972-97-3) 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 329.6ºC at 760 mmHg, a density of 1.381g/cm3 and a flash point of 153.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
33972-97-3
Jingsj CID
J-1488840-5
Molecular Formula
C7H7NO3
Molecular Weight
153.13500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point329.6ºC at 760 mmHg
Density1.381g/cm3
Flash Point153.2ºC
Exact Mass153.04300
PSA59.30000
LogP0.08350
Refractive Index1.577

Customs & Trade Information

HS Code2933399090
Summary2933399090. 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 1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid?

The CAS number of 1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid is 33972-97-3.

What are the molecular formula and molecular weight of 1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid?

1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid has molecular formula C7H7NO3 and molecular weight 153.13500 g/mol.

What are the upstream and downstream products of 1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid?

For 1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid, Upstream Products: Methyl 1-methyl-2-oxo-1,2-dihydropyridine-4-carboxylate, Methyl isonicotinate, 2-Hydroxyisonicotinic acid; Downstream Products: Methyl 1-methyl-2-oxo-1,2-dihydropyridine-4-carboxylate, 2-Oxo-1,2-dihydropyridine-4-carboxylic acid hydrazide, 1-Methyl-2-oxo-1,2-dihydropyridine-4-carbonyl chloride.

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

Last updated:

How to cite: Jingsj. "1-Methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 33972-97-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1488840-5 (accessed 2026-11-09).

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