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5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid

Also known as: 1-methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylic acid, 1H-Pyrazole-3-carboxylic acid, 5-hydroxy-1-methyl-, 2-methyl-3-oxo-1H-pyrazole-5-carboxylic acid, 3-Carboxy-1-methyl-1H-pyrazol-5-ol, 3-Carboxy-5-hydroxy-1-methyl-1H-pyrazole, 5-Hydroxy-1-methyl-3-pyrazolecarboxylic acid

5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 58364-97-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O3 and a molecular weight of 142.11300 g/mol. Key properties include a boiling point of 415.7ºC at 760 mmHg, a density of 1.56g/cm3 and a flash point of 205.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
58364-97-9
Jingsj CID
J-1357683-5
Molecular Formula
C5H6N2O3
Molecular Weight
142.11300 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point415.7ºC at 760 mmHg
Density1.56g/cm3
Flash Point205.2ºC
Exact Mass142.03800
PSA75.35000
Refractive Index1.632

Customs & Trade Information

HS Code2933199090
Summary2933199090. other compounds containing an unfused pyrazole 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-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid?

The CAS number of 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid is 58364-97-9.

What are the molecular formula and molecular weight of 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid?

5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid has molecular formula C5H6N2O3 and molecular weight 142.11300 g/mol.

What are the upstream and downstream products of 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid?

For 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid, Upstream Products: Ethyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate.

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

Last updated:

How to cite: Jingsj. "5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 58364-97-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1357683-5 (accessed 2026-11-09).

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