2-(2-Oxoindolin-4-yl)ethyl 4-methylbenzenesulfonate

Also known as: 4-[2'-[[(4-Methylphenyl)sulfonyl]oxy]ethyl]-1,3-dihydro-2H-indole-2-one, 4-[2-[[(4-Methylphenyl)sulfonyl]oxy]ethyl]-1,3-dihydro-2H-indole-2-one, 4-[2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]-2-oxoindole, 1,3-Dihydro-4-[2-[[(4-Methylphenyl)sulfonyl]oxy]ethyl]-, 4-[2'-[[(4-Methylphenyl)sulfonyl]oxy]ethyl]- 1,3-di- hydro -2H-Indol-2-one, 4-methylbenzenesulfonic acid 2-(2-oxo-4-indolyl)ethyl ester, Ropinirole Intermediate 6, Ropinirole Tosyl Derivative

2-(2-Oxoindolin-4-yl)ethyl 4-methylbenzenesulfonate (CAS 139122-20-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C17H17NO4S and a molecular weight of 331.38600 g/mol. Key properties include a boiling point of 561.181ºC at 760 mmHg and a density of 1.311. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 139122-20-6
Jingsj CID: J-1147876-5
Molecular Formula: C₁₇H₁₇NO₄S
Molecular Weight: 331.38600 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	561.181ºC at 760 mmHg
Density	1.311
Exact Mass	331.08800
PSA	80.85000
LogP	3.65640
Vapor Pressure	0mmHg at 25°C
Refractive Index	1.604

Customs & Trade Information

HS Code	2933790090
Summary	2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2-(2-Oxoindolin-4-yl)ethyl 4-methylbenzenesulfonate?

The CAS number of 2-(2-Oxoindolin-4-yl)ethyl 4-methylbenzenesulfonate is 139122-20-6.

What are the molecular formula and molecular weight of 2-(2-Oxoindolin-4-yl)ethyl 4-methylbenzenesulfonate?

2-(2-Oxoindolin-4-yl)ethyl 4-methylbenzenesulfonate has molecular formula C17H17NO4S and molecular weight 331.38600 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. "2-(2-Oxoindolin-4-yl)ethyl 4-methylbenzenesulfonate (CAS 139122-20-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1147876-5 (accessed 2026-11-09).

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