| n-cyano-n'-(1,1-dimethylethyl)-4-methyl-1-piperazinecarboximidamid |
| 1-(n-tert-butyl-n'-cyanoguanyl)-4-methylpiperazine |
| n-tert-butyl-n'-cyano-4-methyl-1-piperazinecarboxamidin |
| n-cyano-n'-(1,1-dimethylethyl)-4-methyl-1-piperazinecarboximidamide |
| n-tert-butyl-n'-cyano-4-methyl-1-piperazinecarboxamidine |
