1-[3-(4-Chlorophenyl)-5-isoxazolyl]-1-ethanone

Also known as: 1-(3-(4-chlorophenyl)isoxazol-5-yl)ethanone, 1-[3-(4-chlorophenyl)-1,2-oxazol-5-yl]ethanone, 5-ACETYL-3-(4-CHLOROPHENYL)-ISOXAZOLE, BUTTPARK 82\12-93, Ethanone, 1-[3-(4-chlorophenyl)-5-isoxazolyl]-, 1-(3-(4-Chlorophenyl)isoxazol-5-yl)ethan-1-one

1-[3-(4-Chlorophenyl)-5-isoxazolyl]-1-ethanone (CAS 37091-33-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H8ClNO2 and a molecular weight of 221.64000 g/mol. Key properties include a melting point of 148-149ºC, a boiling point of 399.1ºC at 760mmHg, a density of 1.272g/cm3 and a flash point of 195.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 37091-33-1
Jingsj CID: J-1332867-1
Molecular Formula: C₁₁H₈ClNO₂
Molecular Weight: 221.64000 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	148-149ºC
Boiling Point	399.1ºC at 760mmHg
Density	1.272g/cm3
Flash Point	195.1ºC
Exact Mass	221.02400
PSA	43.10000
LogP	3.19760
Refractive Index	1.557

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 1-[3-(4-Chlorophenyl)-5-isoxazolyl]-1-ethanone?

The CAS number of 1-[3-(4-Chlorophenyl)-5-isoxazolyl]-1-ethanone is 37091-33-1.

What are the molecular formula and molecular weight of 1-[3-(4-Chlorophenyl)-5-isoxazolyl]-1-ethanone?

1-[3-(4-Chlorophenyl)-5-isoxazolyl]-1-ethanone has molecular formula C11H8ClNO2 and molecular weight 221.64000 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. "1-[3-(4-Chlorophenyl)-5-isoxazolyl]-1-ethanone (CAS 37091-33-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1332867-1 (accessed 2026-11-09).

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