Perampanel Impurity 9

Chemical Name: 2-(6-Oxo-1-phenyl-1,6-dihydro-[2,3'-bipyridin]-5-yl)benzoic acid

Synonym: 2-((6aR,6bS,7S,8aS,8bS,11aR,12aS,12bS)-7-hydroxy-6a,8a,10-trimethyl-4-oxo-1,2,4,6a,6b,7,8,8a,11a,12,12a,12b-dodecahydro-8bH-naphtho[2',1':4,5]indeno[1,2-d]oxazol-8b-yl)-2-oxoethyl formate