Brivaracetam impurity 96

Brivaracetam impurity 135

Brivaracetam impurity 84

Brivaracetam impurity 236

Brivaracetam impurity 132

(E)-N-methyl-3-(methylamino)but-2-enamide

Brivaracetam impurity 203

Brivaracetam impurity 166

Brivaracetam impurity 160

Brivaracetam impurity 180

Brivaracetam impurity 140

tert-butyl 4-(6-((6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carboxylate 2-hydroxyethanesulfonate

Brivaracetam impurity 143

Brivaracetam impurity 15 oxalate

Brivaracetam impurity 218

5-((2-carboxyphenyl)ethynyl)-2-fluorobenzoic acid

Brivaracetam impurity 15 maleate

Brivaracetam impurity 168

Brivaracetam impurity 71

Brivaracetam impurity 187