Piperidine-1-Carboxylic Acid tert-Butyl Ester
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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is not an ester of piperidine but a different derivative
Other heterocyclic compounds with an unfused pyridine ring, when not more specifically covered by the piperidine subheading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under Tariff item 2933.32.00
1-(2-Methoxyethyl)piperidine
1-(2-Methoxyethyl)piperidine is an ether-substituted piperidine used as a synthetic intermediate. Its core piperidine ring structure qualifies it under tariff item 2933.32.00, as the subheading covers piperidine and its salts, including derivatives with substituents on the ring. It is a chemically defined organic compound.
1-Benzylpiperidine
1-Benzylpiperidine is an N-protected piperidine derivative used in medicinal chemistry. The unfused piperidine ring structure places it under tariff item 2933.32.00, as the subheading covers piperidine and its salts, including N-substituted derivatives. It is a chemically defined organic compound.
1-Methylpiperidine
1-Methylpiperidine is an N-alkylated derivative of piperidine, a saturated six-membered heterocyclic amine. It is used as a base in organic synthesis and as a solvent. It falls under tariff item 2933.32.00 as a piperidine derivative, covered by the subheading for piperidine and its salts.
3,5-Dimethylpiperidine
3,5-Dimethylpiperidine is a dialkylated piperidine derivative used in chiral ligand synthesis. As a simple substituted piperidine, it falls under tariff item 2933.32.00, which covers piperidine and its salts, including alkyl-substituted derivatives. It is a chemically defined organic compound.
4-Aminopiperidine Dihydrochloride
4-Aminopiperidine Dihydrochloride is a substituted piperidine salt used in the synthesis of pharmaceutical intermediates. It features the core piperidine ring structure and is a salt, so it falls under tariff item 2933.32.00, which covers piperidine and its salts. The amino group does not change the classification.
4-Phenylpiperidine Hydrochloride
4-Phenylpiperidine Hydrochloride is a key intermediate for opioid analgesics like pethidine. The core piperidine ring structure qualifies it for tariff item 2933.32.00 as a piperidine salt, despite the phenyl substituent. It is a chemically defined organic compound.