Fenproporex Precursor Base (4-Cyano-2-Dimethylamino-4,4-Diphenylbutane) from Germany
4-Cyano-2-dimethylamino-4,4-diphenylbutane serving dual role as precursor for both fenproporex (appetite suppressant) and methadone production. Tariffed under HTS 2926.30.2000 for its explicit chemical identification as a nitrile-function methadone intermediate. Qualifies under Chapter 29 as a pure organic compound used in hormone-related pharmaceutical synthesis.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Dual end-use requires specifying primary application in entry summary to align with tariff intent
• Include stabilizer analysis to ensure additions comply with Chapter Note 1(g) for identification/safety