Piperidin-2-One from Germany
Piperidin-2-one (δ-valerolactam) is a six-membered lactam ring used in organic synthesis and polymer chemistry. Classified under HTS 2933.79.85.00 as other lactams with nitrogen hetero-atom only. Distinguish from piperidine bases by amide functionality.
Duty Rate — Germany → United States
15%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Submit FTIR spectra confirming amide C=O stretch at 1650-1680 cm⁻¹ vs amine C-N
• Prevent dual classification with 2933.33 (phenothiazine derivatives) by confirming no aromatic rings
• Document <0.1% piperidine free base to avoid amine contamination reclassification