Ethyl 5-methyl-3-phenylisoxazole-4-carboxylate

Also known as: ethyl 5-methyl-3-phenyl-1,2-oxazole-4-carboxylate, ethyl 5-methyl-3-phenyl-4-isoxazolecarboxylate, 3-phenyl-4-ethoxycarbonyl-5-methylisoxazole, 4-isoxazolecarboxylic acid, 5-methyl-3-phenyl-, ethyl ester, 5-methyl-3-phenyl-4-isoxazolecarboxylic acid ethyl ester, 5-methyl-3-phenylisoxazole-4-carboxylic acid ethyl ester

Ethyl 5-methyl-3-phenylisoxazole-4-carboxylate (CAS 1143-82-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H13NO3 and a molecular weight of 231.24700 g/mol. Key properties include a boiling point of 372.9ºC at 760 mmHg, a density of 1.148 g/cm3 and a flash point of 179.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1143-82-4
Jingsj CID: J-1320288-5
Molecular Formula: C₁₃H₁₃NO₃
Molecular Weight: 231.24700 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	372.9ºC at 760 mmHg
Density	1.148 g/cm3
Flash Point	179.3ºC
Exact Mass	231.09000
PSA	52.33000
LogP	2.82670
Vapor Pressure	9.34E-06mmHg at 25°C
Refractive Index	1.532

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. 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 Ethyl 5-methyl-3-phenylisoxazole-4-carboxylate?

The CAS number of Ethyl 5-methyl-3-phenylisoxazole-4-carboxylate is 1143-82-4.

What are the molecular formula and molecular weight of Ethyl 5-methyl-3-phenylisoxazole-4-carboxylate?

Ethyl 5-methyl-3-phenylisoxazole-4-carboxylate has molecular formula C13H13NO3 and molecular weight 231.24700 g/mol.

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. "Ethyl 5-methyl-3-phenylisoxazole-4-carboxylate (CAS 1143-82-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1320288-5 (accessed 2026-11-09).

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