1,2-Benzisoxazole-3-carboxylic acid ethyl ester

Also known as: Ethyl 1,2-benzisoxazole-3-carboxylate, 1,2-Benzisoxazole-3-carboxylic acid ethyl ester, Ethyl benzo[d]isoxazole-3-carboxylate

1,2-Benzisoxazole-3-carboxylic acid ethyl ester (CAS 40991-36-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H9NO3 and a molecular weight of 191.18300 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40991-36-4
Jingsj CID: J-1125825-6
Molecular Formula: C₁₀H₉NO₃
Molecular Weight: 191.18300 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	191.05800
PSA	52.33000
LogP	2.00450

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 1,2-Benzisoxazole-3-carboxylic acid ethyl ester?

The CAS number of 1,2-Benzisoxazole-3-carboxylic acid ethyl ester is 40991-36-4.

What are the molecular formula and molecular weight of 1,2-Benzisoxazole-3-carboxylic acid ethyl ester?

1,2-Benzisoxazole-3-carboxylic acid ethyl ester has molecular formula C10H9NO3 and molecular weight 191.18300 g/mol.

What are the upstream and downstream products of 1,2-Benzisoxazole-3-carboxylic acid ethyl ester?

For 1,2-Benzisoxazole-3-carboxylic acid ethyl ester, Upstream Products: benzo[d]isothiazole-3-carboxamide, Ethanol.

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. "1,2-Benzisoxazole-3-carboxylic acid ethyl ester (CAS 40991-36-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1125825-6 (accessed 2026-11-09).

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