1,3-Dihydro-4-(2-hydroxyethyl)-2H-indole-2-one

1,3-二氢-4-(2-羟乙基)-2H-吲哚-2-酮

Also known as: 4-(2-Hydroxyethyl)oxindole, 4-(2-Hydroxyethyl)indolin-2-one, 4-(2-Hydroxyethyl)-1,3-dihydro-2H-indol-2-one, 4-(2-Hydroxyethyl)oxyindole, Ropinirole Intermediate 5, Ropinirole EP Impurity F, Ropinirole USP RC A, Ropinirol Related Compound A

1,3-Dihydro-4-(2-hydroxyethyl)-2H-indole-2-one (CAS 139122-19-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H11NO2 and a molecular weight of 177.200 g/mol. It is also known as 4-(2-Hydroxyethyl)oxindole, 4-(2-Hydroxyethyl)indolin-2-one and 4-(2-Hydroxyethyl)-1,3-dihydro-2H-indol-2-one. Key properties include a melting point of 148-150ºC, a boiling point of 390.0±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 189.7±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

139122-19-3

Jingsj CID

J-1016653-2

Molecular Formula

C₁₀H₁₁NO₂

Chinese Name

1,3-二氢-4-(2-羟乙基)-2H-吲哚-2-酮

Molecular Weight

177.200 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026