Theophylline USP Grade from Canada
Theophylline USP is a methylxanthine alkaloid used as a bronchodilator in respiratory medications. Classified under HTS 2939.59.00.00 as a theophylline derivative in pure form for pharmaceutical synthesis. Meets USP standards for medicinal applications.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%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
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Include DEA documentation if precursor concerns arise; provide pharmacopeia compliance certificates; avoid bulk packaging over 25kg to prevent industrial chemical reclassification