Quinuclidin-3-yl Benzilate USP Reference Standard from Mexico
USP-grade 3-quinuclidinyl benzilate used as a reference standard in pharmaceutical quality control, classified under HTS 2933.39.61.10 due to its specific chemical structure with pyridine hetero-atom. Meets chapter 29 requirements for chemically defined organic compounds.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6093.5%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
• Provide USP certificate and intended use declaration for analytical reference; maintain cold chain if stability requires refrigeration; avoid bulk quantities exceeding research needs to prevent diversion concerns