Ethyl1-Boc-3-piperidineacetate

Ethyl 2-(1-Boc-3-piperidyl)acetate

REF DUPL: 1-N-Boc-3-Ethoxycarbonylmethyl-piperidine

tert-butyl 3-(2-ethoxy-2-oxoethyl)piperidine-1-carboxylate