O-2-(Diethylamino)ethyl Hydrogen Ethylphosphonite from Mexico
A phosphonite ester derivative with diethylaminoethyl and ethyl groups, precisely fitting HTS 2931.49.00.08 for non-halogenated amino-substituted phosphonites. Used in asymmetric catalysis and pharmaceutical intermediate production.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.3%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
• Declare exact alkyl chain specifications (ethyl in this case) in commercial invoice to match subheading criteria
• Obtain EPA pre-approval if destined for US chemical manufacturing to comply with TSCA regulations