4-Hydroxypyrimidine-5-carboxylic acid

Also known as: 6-Oxo-1,6-dihydropyrimidine-5-carboxylic acid, 4-Oxo-1,4-dihydropyrimidine-5-carboxylic acid, 4-Oxo-3,4-dihydro-5-pyrimidinecarboxylic acid, 5-Pyrimidinecarboxylic acid, 1,4-dihydro-4-oxo- (9CI), 5-Pyrimidinecarboxylic acid, 4-hydroxy-, 4-Hydroxy-5-pyrimidinecarboxylic acid, 6-oxo-1H-pyrimidine-5-carboxylic acid, 1,6-Dihydro-6-oxo-5-pyrimidinecarboxylic acid

4-Hydroxypyrimidine-5-carboxylic acid (CAS 65754-04-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4N2O3 and a molecular weight of 140.097 g/mol. Key properties include a boiling point of 364.5±27.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 174.2±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 65754-04-3
Jingsj CID: J-1466719-7
Molecular Formula: C₅H₄N₂O₃
Molecular Weight: 140.097 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	364.5±27.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	174.2±23.7 °C
Exact Mass	140.022186
PSA	83.31000
LogP	0.00
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.639
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2933599090
Summary	2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring 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 4-Hydroxypyrimidine-5-carboxylic acid?

The CAS number of 4-Hydroxypyrimidine-5-carboxylic acid is 65754-04-3.

What are the molecular formula and molecular weight of 4-Hydroxypyrimidine-5-carboxylic acid?

4-Hydroxypyrimidine-5-carboxylic acid has molecular formula C5H4N2O3 and molecular weight 140.097 g/mol.

What are the upstream and downstream products of 4-Hydroxypyrimidine-5-carboxylic acid?

For 4-Hydroxypyrimidine-5-carboxylic acid, Upstream Products: Ethyl 2,4-dichloropyrimidine-5-carboxylate, Ethyl 4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-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. "4-Hydroxypyrimidine-5-carboxylic acid (CAS 65754-04-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1466719-7 (accessed 2026-11-09).

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