Sildenafil Citrate API from Japan
Sildenafil citrate, the active ingredient in Viagra, contains a pyrazolo[4,3-d]pyrimidine structure but classifies under unfused pyrazole HTS 2933.19.3500 as a pharmaceutical drug. Used for erectile dysfunction and pulmonary hypertension treatment.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.628.5%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
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Verify citrate salt formation per note 5(C)(1); provide counterion analysis
• Include polymorph Form I certificate; FDA bioequivalence data required
• Prevent 3004 misclassification with 'Bulk API - Not for Direct Human Use' labeling