Piperidine-1-Carboxylic Acid tert-Butyl Ester from United States
Piperidine-1-carboxylic acid tert-butyl ester, commonly known as Boc-piperidine, is a protected form of piperidine used extensively in peptide synthesis. The tert-butyl ester group shields the nitrogen atom, allowing selective reactions elsewhere in the molecule. Under the Customs Tariff, esters of piperidine are classified with the parent compound, piperidine, in heading 29.33.
Duty Rate — United States → Canada
Import Tips
• Ensure the product is clearly identified as piperidine-1-carboxylic acid tert-butyl ester on the commercial invoice to support classification under 2933.32.00
• Verify whether the shipment requires a permit under the Controlled Drugs and Substances Act, as piperidine derivatives may be monitored
• Keep laboratory certificates or technical data sheets available in case the CBSA requests proof of chemical identity