6-(1,3-dihydrophenanthro[9,10-d]imidazol-2-ylidene)cyclohexa-2,4-dien-1-one

5,6-二氨基-1,10-邻菲罗啉

2,2'-联吡啶-3,3'-二羧酸

pyrazino[2,3-f][1,10]phenanthroline-2,3-dicarboxylic acid

methyl pyrazino[2,3-f][1,10]phenanthroline-3-carboxylate