2-PIPERIDINECARBOXYLIC ACID 4043-87-2 535-75-1 69470-51-5 Acide pipecolique [French] Acide piperidine-carboxylique-2 [French] Dihydrobaikiane EINECS 208-616-3 EINECS 223-737-1 Hexahydropicolinic acid Homoproline NSC 17125 Pipecolate Pipecolic acid Pipecolinic acid Piperolinic acid