(2E)-3-Cyclopentylprop-2-enenitrile591769-05-031 % similar N-Boc-3-cyanopiperidine91419-53-331 % similar (S)-1-N-Boc-3-cyanopiperidine915226-39-031 % similar tert-Butyl 4-cyanopiperidine-1-carboxylate91419-52-231 % similar N,N′-Dicyclohexylcarbodiimide538-75-030 % similar