1,4-Naphthoquinone USP Grade from Mexico
1,4-Naphthoquinone is a quinone compound used in antifungal drugs and as a precursor for vitamin K analogs. It is classified under HTS 2914.69.21.00 as a drug due to its USP pharmaceutical grade and specific medicinal applications per Chapter 29.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6094.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• USP certificate mandatory; include microbial limits testing for pharma import clearance
• Declare exact isomer purity to comply with Chapter 29 note (b) on mixtures