tert-Butyl 4-(2,2,2-trifluoro-1-aMinoethyl)piperidin-1-carboxylate; tert-Butyl 4-(2,2,2-trifluoro-1-aMinoethyl)piperidine-1-carboxylate; 1-Piperidinecarboxylic acid, 4-(1-amino-2,2,2-trifluoroethyl)-, 1,1-dimethylethyl ester;