API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Ropinirole

Impurity E

4-(Cyclopropylmethoxy)-N-(3,5-dichloro-4-pyridinyl)-3-(difluoromethoxy)benzamide Impurity-E-4-(Cyclopropylmethoxy)
Ropinirole

EP Impurity D(3-oxo Ropinirole)

4-(2-(dipropylamino)ethyl)indoline-2,3-dione ( Usp impurity B) EP-Impurity-D(3-oxo-Ropinirole)
Ropinirole

EP Impurity A (Des propyl impurity)

4-(2-(propylamino)ethyl)indolin-2-one EP-Impurity-A-(Des-propyl-impurity)
Ropinirole

N-oxide impurity

N-oxide impurity
Ropinirole

Ropinirole Impurity

2-(2-Oxo-1,3-dihydro-4-indolyl)ethyl-p-toulenesulphonate Ropinirole-Impurity-2-(2-Oxo-1,3