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3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid

Also known as: 3-(2-Chlorophenyl)-5-methyl-4-isoxazolecarboxylic acid, 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid (CMIC acid), 3-(2-Chlorophenyl)-5-methyl-1,2-oxazole-4-carboxylic acid, 3-(2-Chlorophenyl)-5-methylisoxazol-4-carboxylic acid, 3-(o-Chlorophenyl)-5-methyl-4-isoxazolecarboxylic acid, 4-Carboxy-3-(2-chlorophenyl)-5-methylisoxazole, 5-Methyl-3-(2-chlorophenyl)isoxazole-4-carboxylic acid, CMIC acid, MFCD00020813, EINECS 245-770-0

3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 23598-72-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H8ClNO3 and a molecular weight of 237.63900 g/mol. Key properties include a melting point of 186-189ºC, a boiling point of 374.5ºC at 760 mmHg, a density of 1.385 g/cm3 and a flash point of 180.3ºC. 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.
23598-72-3
Jingsj CID
J-39786-4
Molecular Formula
C11H8ClNO3
Molecular Weight
237.63900 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point186-189ºC
Boiling Point374.5ºC at 760 mmHg
Density1.385 g/cm3
Flash Point180.3ºC
Exact Mass237.01900
PSA63.33000
LogP3.00160
Vapor Pressure2.83E-06mmHg at 25°C
Refractive Index1.59

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. 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 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid?

The CAS number of 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid is 23598-72-3.

What are the molecular formula and molecular weight of 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid?

3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid has molecular formula C11H8ClNO3 and molecular weight 237.63900 g/mol.

Is 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid hazardous?

3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid?

For 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid, Upstream Products: 2-Chlorobenzaldehyde, Methyl acetoacetate, alpha,2-Dichlorobenzaldoxime; Downstream Products: Cloxacillin sodium, Cloxacillin, 3-(2-Chlorophenyl)-5-methylisoxazole-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. "3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 23598-72-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39786-4 (accessed 2026-11-09).

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