1,3-bis(2-phenylethyl)urea

2,6-dimethyl-3-N,5-N-diphenyl-1,4-dihydropyridine-3,5-dicarboxamide

2,6-dimethyl-3-N,5-N-diphenylpyridine-3,5-dicarboxamide

2,6-dimethyl-4-(3-nitrophenyl)-3-N,5-N-diphenyl-1,4-dihydropyridine-3,5-dicarboxamide

对称-DI-O-苯甲基脲