Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide

Also known as: Ethyl (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetate, Ethyl 2-(1,1,3-trioxo-1,2-benzothiazol-2-yl)acetate, Ethyl 2-(1,1-dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)acetate, 1,2-Benzisothiazole-2(3H)-acetic acid, 3-oxo-, ethyl ester, 1,1-dioxide, Piroxicam Impurity E, Saccharin N-(2-Acetic Acid Ethyl Ester)(Piroxicam Impurity E), UNII-KN712V27AV, ethyl (3-oxo-1,2-benzoisothiazol-2(3H)-yl)acetate 1,1-dioxide, N-carbethoxymethyl-1,2-benzisothiazole-1,1-dioxide-3-one, N-(ethoxycarbonyl)methyl-1,2-benzisothiazol-3(2H)-one 1,1-dioxide

Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide (CAS 24683-20-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11NO5S and a molecular weight of 269.27400 g/mol. Key properties include a boiling point of 441.4ºC at 760 mmHg, a density of 1.442g/cm3 and a flash point of 220.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 24683-20-3
Jingsj CID: J-1178469-3
Molecular Formula: C₁₁H₁₁NO₅S
Molecular Weight: 269.27400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	441.4ºC at 760 mmHg
Density	1.442g/cm3
Flash Point	220.8ºC
Exact Mass	269.03600
PSA	89.13000
LogP	1.41290
Vapor Pressure	5.45E-08mmHg at 25°C
Refractive Index	1.584

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 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide?

The CAS number of Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide is 24683-20-3.

What are the molecular formula and molecular weight of Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide?

Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide has molecular formula C11H11NO5S and molecular weight 269.27400 g/mol.

What are the upstream and downstream products of Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide?

For Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide, Upstream Products: Ethyl bromoacetate, Saccharin, Saccharin sodium; Downstream Products: Methyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide, Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide, (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid.

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 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide (CAS 24683-20-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1178469-3 (accessed 2026-11-09).

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