2939.59.00.00/Theophylline Guaiacol Ester/Japan

Theophylline Guaiacol Ester from Japan

Theophylline guaiacol ester modifies alkaloid pharmacokinetics for sustained release. Classifies HTS 2939.59.00.00 per ester rules following parent xanthine. Used in experimental pulmonology.

Duty Rate — Japan → United States

15%

Rate breakdown

9903.04.6215%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

9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter

Calculate with your customs value Verify with the Tariff Assistant

Import Tips

• Ester linkage confirmation; guaiacol impurity limits; research-only labeling