Triphenylmethyl Chloride (Trityl Chloride) from Mexico
Triphenylmethyl chloride (trityl chloride) is a protecting group reagent for nucleosides and peptides, classified under HTS 2942.00.50.00 as 'other' organic compounds. This triarylmethyl halide is essential in oligonucleotide synthesis.
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
• Handle as moisture-sensitive; ship with desiccant and include residual water analysis (<0.1%)
• Declare as UN 1759 (chlorosilanes, corrosive) analog with proper PPE requirements
• Provide end-use statement for oligonucleotide manufacturing to avoid ITC scrutiny