Methyl 5-phenylisoxazole-3-carboxylate

5-苯基异噁唑-3-甲酸甲酯

Also known as: 3-Isoxazolecarboxylic acid, 5-phenyl-, methyl ester, Methyl 5-phenyl-1,2-oxazole-3-carboxylate, Methyl 5-phenyl-3-isoxazolecarboxylate, 3-(Methoxycarbonyl)-5-phenylisoxazole

Methyl 5-phenylisoxazole-3-carboxylate (CAS 51677-09-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H9NO3 and a molecular weight of 203.194 g/mol. It is also known as 3-Isoxazolecarboxylic acid, 5-phenyl-, methyl ester, Methyl 5-phenyl-1,2-oxazole-3-carboxylate and Methyl 5-phenyl-3-isoxazolecarboxylate. Key properties include a melting point of 81ºC, a boiling point of 370.2±30.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 177.7±24.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 51677-09-9
Jingsj CID: J-1439062-5
Molecular Formula: C₁₁H₉NO₃
Chinese Name: 5-苯基异噁唑-3-甲酸甲酯
Molecular Weight: 203.194 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	81ºC
Boiling Point	370.2±30.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	177.7±24.6 °C

Frequently Asked Questions

What is the CAS number of Methyl 5-phenylisoxazole-3-carboxylate?

The CAS number of Methyl 5-phenylisoxazole-3-carboxylate is 51677-09-9.

What are the molecular formula and molecular weight of Methyl 5-phenylisoxazole-3-carboxylate?

Methyl 5-phenylisoxazole-3-carboxylate has molecular formula C11H9NO3 and molecular weight 203.194 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Methyl 5-phenylisoxazole-3-carboxylate (CAS 51677-09-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1439062-5 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.