A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Recommanded Product: 15862-86-9, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15862-86-9, Name is Piperidine-2-carboxylic acid hydrochloride, molecular formula is C6H12ClNO2. In a Patent, authors is ，once mentioned of 15862-86-9
A process for preparing levobupivacaine, racemic bupivacaine or another N-alkyl analogue thereof, comprises chlorinating pipecolic acid hydrochloride, amidation of the resultant pipecolyl chloride hydrochloride in solvent, without isolation, with 2,6-dimethylaniline, and alkylation of the resultant pipecolic acid 2,6-xylidide. Alternatively, the alkylation may be followed by the amidation.
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Reference：
Piperidine – Wikipedia,
Piperidine | C5H9615N – PubChem