Dihydroergotamine Mesylate from Canada
Dihydroergotamine mesylate, a semi-synthetic salt derivative of ergotamine used for acute migraine therapy via injection or nasal spray. Falls under HTS 2939.62.00.00 as a salt of ergotamine (its parent alkaloid) per the heading's coverage of rye ergot derivatives. Imported as high-purity API with anti-dusting agent for safety.
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
• Confirm semi-synthetic status doesn't alter classification via chemical analysis certificate; secure advance narcotic import license; test for mesylate purity to avoid base compound disputes