N-丁基-1,3-二氨基丙烷

2-[2-(1,4,5,6-tetrahydropyrimidin-2-yl)ethyl]-1,4,5,6-tetrahydropyrimidine

1-thia-4,8-diazacyclodecane-3,9-dione

1,11-dithia-4,8,14,18-tetrazacycloicosane-3,9,13,19-tetrone

2-N-[3-[(4,6-diamino-1,3,5-triazin-2-yl)amino]propyl]-1,3,5-triazine-2,4,6-triamine