N-Phenethyl-4-piperidone (NPP) Pure Chemical from Japan
N-Phenethyl-4-piperidone (NPP) is a heterocyclic compound containing an unfused piperidone ring (hydrogenated pyridine derivative) with a phenethyl substituent, precisely matching HTS 2933.37.00.00. This pure chemical form is used primarily as a chemical intermediate in pharmaceutical synthesis. It falls under Chapter 29 as a separate chemically defined organic compound with nitrogen hetero-atom(s) only.
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
• Verify List I chemical status with DEA; obtain import permit and Letter of Registration before shipment
• Provide detailed chemical analysis certificate confirming purity >98% and structure matching NPP specifications
• Avoid common pitfalls like mislabeling as generic piperidone; precise nomenclature prevents reclassification