Methyprylon Synthesis Intermediate from Germany
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 — Germany → United States
25%
Rate breakdown
9903.04.6215%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
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
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