High-Purity Trityl Chloride for Oligonucleotide Production from China
Specially purified trityl chloride for dimethoxytrityl (DMT) group attachment in oligonucleotide synthesis is the pure compound of HTS 2903.99.15.00. Its role as a chemically defined halide supports biotech manufacturing.
Duty Rate — China → United States
20%
Rate breakdown
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Link to DMF for biotech end-use; cleanroom packaging; purity >99.5% documentation