Ropinirole Related CoMpound A;4-(2-hydroxyethyl)oxindole;Ropinirole USP RC A;4-(2-Hydroxyethyl)indolin-2-one;Ropinirole Related Compound A (50 mg) (4-(2-hydroxyethyl)indolin-2-one);2-(1H-indol-4-yloxy)ethan-1-ol;4-(2-Hydroxyethyl)-1,3-dihydroindol-2-one;4-(2-Hydroxyethyl)oxyindole/1,3-Dihydro-4-(2-hydroxyethyl)-2H-indole-2-one