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4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid

Also known as: 1-(4-Carboxyphenyl)-3-methyl-2-pyrazolin-5-one, 1-(4-Carboxyphenyl)-3-methyl-5-pyrazolone, 4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzoic acid, Benzoic acid, 4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-, 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid, 1-(4-Carboxylphenyl)-3-methyl-5-pyrazolone, MFCD00003135

4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid (CAS 60875-16-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H10N2O3 and a molecular weight of 218.209 g/mol. Key properties include a melting point of 285 °C (dec.)(lit.), a boiling point of 477.6±28.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 242.7±24.0 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
60875-16-3
Jingsj CID
J-31123-9
Molecular Formula
C11H10N2O3
Molecular Weight
218.209 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point285 °C (dec.)(lit.)
Boiling Point477.6±28.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point242.7±24.0 °C
Exact Mass218.069138
PSA69.97000
LogP0.11
Vapor Pressure0.0±1.3 mmHg at 25°C
Refractive Index1.642

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Activity & Biological Data

Additional Information[1]. G M Antón-Fos, et al. Pharmacological Studies of the Two New Hypoglycaemic Compounds 4-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzoic Acid and 1-(mesitylen-2-sulfonyl)-1H-1,2,4-triazole. Arzneimittelforschung. 1994 Jul;44(7):821-6.

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 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid?

The CAS number of 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid is 60875-16-3.

What are the molecular formula and molecular weight of 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid?

4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid has molecular formula C11H10N2O3 and molecular weight 218.209 g/mol.

Is 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid hazardous?

4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid?

For 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid, Upstream Products: Ethyl acetoacetate, 4-Hydrazinobenzoic acid, 2-hydrazinobenzoic acid.

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

Last updated:

How to cite: Jingsj. "4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid (CAS 60875-16-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31123-9 (accessed 2026-11-09).

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