5-methyl-2-phenyl-1,4-dihydroimidazo[4,5-b]pyridin-7-one

N-(1-benzoyl-2,4-dioxopyrrolidin-3-yl)benzamide

2,4-bis-benzoylamino-cyclobutane-1,3-dione

Hippuramide

hippuric acid hydroxyamide