中間體 Ethyl 1-methyl piperidine-2-carboxylate  1-甲基-2-哌啶甲酸乙酯30727-18-5 ≥98%淺黃色液體
中間體 Ethyl 1-methyl piperidine-3-carboxylate  1-甲基-3-哌啶甲酸乙酯 5166-67-6  ≥98%淺黃色液體
中間體Ethyl 1-methyl piperidine-4-carboxylate  1-甲基-4-哌啶甲酸乙酯 24252-37-7       ≥98%  淺黃色液體

中間體 Methyl N-Boc-piperidine-2-carboxylate N-Boc-2-哌啶甲酸甲酯 167423-93-0 ≥99%淺黃色粘稠液體

中間體 Methyl N-Boc-piperidine-3-carboxylate N-Boc-3-哌啶甲酸甲酯 148763-41-1 ≥99%淺黃色粘稠液體
中間體Methyl N-Boc-piperidine-4-carboxylate  N-Boc-4-哌啶甲酸甲酯 124443-68-1  ≥99%淺黃色粘稠液體

中間體Ethyl N-Boc-piperidine-2-carboxylate   N-Boc-2-哌啶甲酸乙酯 362703-48-8 ≥99%淺黃色粘稠液體

中間體Ethyl N-Boc-piperidine-3-carboxylate  N-Boc-3-哌啶甲酸乙酯  130250-54-3 ≥99%淺黃色粘稠液體
中間體Ethyl N-Boc-piperidine-4-carboxylate   N-Boc-4-哌啶甲酸乙酯142851-03-4 ≥99%淺黃色粘稠液體

中間體Ethyl (R)-nipecotate  (R)-3-哌啶甲酸乙酯  25137-01-3   ≥99%  Ｒ-Nipecotic acid   25137-00-2   淺黃色液體