Pyrazino[2,3-f][1,10]phenanthroline
Furo[3,4-b]furo[3',4':5,6]pyrazino[2,3-f]furo[3',4':5,6]pyrazino[2,3-h]quinoxaline-1,3,6,8,11,13-hexaone
Pyrazino[2,3-f][4,7]phenanthroline
4,4',4'',4'''-(Pyrazino[2,3-g]quinoxaline-2,3,7,8-tetrayl)tetrabenzoic acid
tert-Butyl 8-benzyloctahydro-2H-pyrazino[1,2-a]pyrazine-2-carboxylate
2-Methyloctahydro-1H-pyrazino[1,2-a]pyrazine trihydrochloride
