Alkylated O,O-Diethyl S-[2-(diethylamino)ethyl] phosphorothioate salt from Mexico
An alkylated salt form of O,O-Diethyl S-[2-(diethylamino)ethyl] phosphorothioate, explicitly covered under HTS 2930.90.92.08 per Chapter 29 note on salts of organic compounds. The organo-sulfur structure with direct C-S bond maintains classification in heading 2930.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Submit salt characterization data (NMR, MS) to prove it's the protonated/alkylated form listed in the tariff
• Check for DEA List I status; may require additional narcotic chemical import permits