DL-3-(3,4-Dihydroxyphenyl)alanine (DL-DOPA) from Japan
DL-3-(3,4-Dihydroxyphenyl)alanine, commonly known as DL-DOPA, is a synthetic form of the amino acid precursor to dopamine used in pharmaceutical synthesis for treating Parkinson's disease. It falls under HTS 2922.50.10.00 as an explicitly listed aromatic amino-acid-phenol with oxygen function, containing both amino and phenolic hydroxy groups.
Duty Rate — Japan → United States
21.7%
Rate breakdown
9903.04.629.2%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide chemical purity certificates and CAS number (59-92-7) documentation to verify identity as listed compound
• Ensure proper Hazard Communication labeling (H301, H361d) and comply with TSCA/DOT regulations for import
• Avoid misclassification as finished pharmaceutical; declare as bulk chemical intermediate