cis-tert-butyl 4-amino-2-methylpiperidine-1-carboxylate; (2R,4R)-rel-tert-Butyl 4-amino-2-methylpiperidine-1-carboxylate; tert-butyl cis-4-amino-2-methylpiperidine-1-carboxylate; tert-Butyl cis-4-amino-2-methyl-1-piperidinecarboxylate; cis-4-Amino-2-methyl-piperidine-1-carboxylic acid tert-butyl ester;