Rosuvastatin Acid Ethyl EsterRosuvastatin IMP (3R,5S,6E)-7-[4-(4-Fluorophenyl)-6-(1-methylethyl)-2-(methyl-methyl sulfonyl-amino)-pyrimidin-5-yl]-3,5-dihydroxy-hept-6-enoic Acid Ethyl Ester

Rosuvastatin (3R,5R) Isomer CalciumRosuvastatin IMP (3R,5R,6E)-7-[4-(4-Fluorophenyl)-6-(1-methylethyl)-2-[methyl (methyl sulfonyl) amino]-5-pyrimidinyl]-3,5-dihydroxy-6-heptenoic Acid Calcium Salt

RupatadineRupatadine IMP 8-Chloro-6,11-dihydro-11-[1-[(5-methyl-3-pyridyl)methyl]-4-piperidylidene]-5H-benzo[5,6]cyclohepta[1,2-b]pyridine

Rupatadine FumarateRupatadine Fumarate API 8-Chloro-6,11-dihydro-11-[1-[(5-methyl-3-pyridinyl)methyl]-4-piperidinylidene]-5H-benzo[5,6]cyclohepta[1,2-b]pyridine (2E)-2-Butenedioate

Rupatadine Impurity BRupatadine Fumarate IMP (4-(8-chloro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11(6H)-ylidene)piperidin-1-yl)(5-methylpyridin-3-yl)methanone

1,3-DicyclohexylureaRupatadine Fumarate IMP 1,3-Dicyclohexylurea

Rivastigmine Phenol Impurity Rivastigmine IMP 3-[(1S)-1-(Dimethylamino)ethyl]phenol

Rivastigmine Tartrate Dimethyl AnalogRivastigmine IMP (S)-3-[1-(Dimethylamino)ethyl]phenyl dimethyl carbamate

4-(2-hydroxyethyl)indolin-2-oneRopinirole IMP 4-(2-Hydroxyethyl)-1,3-dihydro-2H-indolin-2-one

3-Oxo Ropinirole HydrochlorideRopinirole IMP 4-(2-(dipropylamino)ethyl)indoline-2,3-dione hydrochloride