1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid

Also known as: 1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazole-4-carboxylic acid, 1,5-dimethyl-3-oxo-2-phenyl-pyrazole-4-carboxylic acid, antipyrinecarboxylic acid, antipytic acid, 4-carboxyantipyrine, 1H-pyrazole-4-carboxylic acid, 2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-

1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid (CAS 83-10-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H12N2O3 and a molecular weight of 232.23500 g/mol. Key properties include a melting point of 213 - 214 °C(甲醇); 219 - 221 °C, a boiling point of 363ºC at 760mmHg, a density of 1.342g/cm3 and a flash point of 173.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 83-10-3
Jingsj CID: J-1155253-7
Molecular Formula: C₁₂H₁₂N₂O₃
Molecular Weight: 232.23500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	213 - 214 °C(甲醇); 219 - 221 °C
Boiling Point	363ºC at 760mmHg
Density	1.342g/cm3
Flash Point	173.3ºC
Exact Mass	232.08500
PSA	64.23000
LogP	1.18260
Refractive Index	1.618
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2933199090
Summary	2933199090. 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 1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid?

The CAS number of 1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid is 83-10-3.

What are the molecular formula and molecular weight of 1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid?

1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid has molecular formula C12H12N2O3 and molecular weight 232.23500 g/mol.

What are the upstream and downstream products of 1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid?

For 1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid, Upstream Products: 4-Antipyrinecarboxaldehyde, Antipyrine, 4-Acetylantipyrine; Downstream Products: 4-Bromoantipyrine, Antipyrine, Diantipyrylmethane.

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. "1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid (CAS 83-10-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1155253-7 (accessed 2026-11-09).

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