(1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid

Also known as: 2-(1,1,3-trioxo-1,2-benzothiazol-2-yl)acetic acid, 2-(1,1-dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)acetic acid, 1,2-benzisothiazole-2(3H)-acetic acid, 3-oxo-, 1,1-dioxide, 2-(1,1,3-triketo-1,2-benzothiazol-2-yl)acetic acid, 2-(1,1,3-trioxo-1,2-benzothiazol-2-yl)ethanoic acid, Piroxicam Impurity 14

(1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid (CAS 52188-11-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NO5S and a molecular weight of 241.22100 g/mol. Key properties include a boiling point of 514ºC at 760 mmHg, a density of 1.665g/cm3 and a flash point of 264.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 52188-11-1
Jingsj CID: J-1452868-8
Molecular Formula: C₉H₇NO₅S
Molecular Weight: 241.22100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	514ºC at 760 mmHg
Density	1.665g/cm3
Flash Point	264.7ºC
Exact Mass	241.00400
PSA	100.13000
LogP	0.93440
Refractive Index	1.653

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 (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid?

The CAS number of (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid is 52188-11-1.

What are the molecular formula and molecular weight of (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid?

(1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid has molecular formula C9H7NO5S and molecular weight 241.22100 g/mol.

What are the upstream and downstream products of (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid?

For (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid, Upstream Products: Ethyl 2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate 1,1-dioxide, Saccharin, Saccharin sodium; Downstream Products: Piroxicam.

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. "(1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetic acid (CAS 52188-11-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1452868-8 (accessed 2026-11-09).

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