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Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate

Also known as: 5-(4-Chlorophenyl)-3-isoxazolecarboxylic acid ethyl ester, Ethyl 5-(4-chlorophenyl)-1,2-oxazole-3-carboxylate, 3-Isoxazolecarboxylic acid, 5-(4-chlorophenyl)-, ethyl ester

Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate (CAS 81282-12-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H10ClNO3 and a molecular weight of 251.66600 g/mol. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
81282-12-4
Jingsj CID
J-1507254-5
Molecular Formula
C12H10ClNO3
Molecular Weight
251.66600 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Exact Mass251.03500
PSA52.33000
LogP3.17170
Storage Conditions2-8°C

GHS Safety & Compliance

IrritantSignal word: Warning
  • H319 — Causes serious eye irritation

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 Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate?

The CAS number of Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate is 81282-12-4.

What are the molecular formula and molecular weight of Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate?

Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate has molecular formula C12H10ClNO3 and molecular weight 251.66600 g/mol.

Is Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate hazardous?

Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.

What are the upstream and downstream products of Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate?

For Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate, Upstream Products: Ethyl 4-(4-chlorophenyl)-2,4-dioxobutanoate, Hydroxylamine hydrochloride, Methyl 4-(4-chlorophenyl)-2,4-dioxobutanoate; Downstream Products: [5-(4-Chlorophenyl)-1,2-oxazol-3-yl]methanol, 5-(4-chlorophenyl)-1,2-oxazole-3-carbaldehyde, 5-(4-Chlorophenyl)isoxazole-3-carbohydrazide.

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

Last updated:

How to cite: Jingsj. "Ethyl 5-(4-chlorophenyl)isoxazole-3-carboxylate (CAS 81282-12-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1507254-5 (accessed 2026-11-09).

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