1-Acetamino-4-(α-hydroxy-α-benzamino-acetyl)-benzol
1-Acetamino-4-<α-hydroxy-α-(p-toluolsulfonylamino)-acetyl>-benzol
N-{4-[4-hydroxy-5-oxo-6-benzyl-4-hydropyrazin-2-yl]phenyl}acetamide
4-(quinoxalin-2-yl)aniline
1-Acetamino-4-(α-hydroxy-α-phenylacetamino-acetyl)-benzol