for the following products
1-Butyl-piperidine-2-carboxylic acid (2,6-dimethyl-phenyl)-amide hydrochloride | 2-Piperidinecarboxamide, 1-butyl-N-(2,6-dimethylphenyl)-,monohydrochloride, (±)- | Bupivacaine hydrochloride and 1-Butyl-N-(2,6-dimethylphenyl)-2-piperidinecarboxamide
