Methyprylon Synthesis Intermediate from Canada
High-purity methyprylon used as chemical intermediate in research synthesis of piperidinedione analogs. Qualifies under Chapter 29 as separate chemically defined heterocyclic nitrogen compound. Directly named in tariff subheading 2933.72.00.00.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide intended synthesis pathway documentation to justify research chemical import
• Ensure temperature-controlled shipping (<25°C) to prevent degradation of heat-sensitive lactam
• Complete CBP Biotechnology Notice if genetically modified production strains were used