Diethyl Ether Pharmaceutical Intermediate from Mexico
High-purity diethyl ether used in synthesis of pharmaceutical APIs. Qualifies under 2909.11.00.00 as chemically defined acyclic ether; not excluded as finished immunological product per Chapter 29 note (e).
Duty Rate — Mexico → United States
11%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include intended pharma use declaration but classify as chemical, not finished drug
• FDA Prior Notice required if ultimate end-use is pharmaceutical
• GC purity >99.9% with heavy metals <1ppm for pharma intermediate specs