Methyl [O-2-(Dipropylamino)ethyl] Methylphosphonite Ester from Canada
This O-alkyl ester of a dipropylaminoethyl hydrogen methylphosphonite falls squarely under HTS 2931.49.00.08 due to its defined dialkylamino and C≤10 alkyl structure. Primarily utilized in ligand synthesis for transition metal catalysts.
Duty Rate — Canada → 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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Label containers with UN number for phosphorous esters; mislabeling leads to customs holds
• Provide structural formula verification via NMR/GC-MS data to confirm classification over broader 2931.49.00
• Avoid retail packaging as this triggers exclusion under Chapter notes for consumer preparations