Piperidin-2-One from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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