Dyphylline API from Canada
Dyphylline (7-(2,3-dihydroxypropyl)theophylline) is a theophylline derivative bronchodilator for veterinary and human use. Pure active pharmaceutical ingredient under HTS 2939.59.00.00 as 'other' derivative. Water-soluble for syrup formulations.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Validate hydroxypropyl substitution via NMR spectra; comply with USP monograph if applicable; separate from finished veterinary meds