Ergocornine Base from Mexico
Pure ergocornine is a rye ergot alkaloid isolated for pharmaceutical synthesis and neuropharmacology studies. HTS 2939.69.00.00 covers this natural alkaloid as 'other' rye ergot products, excluding salts/esters which remain in same heading per notes. It's a separate chemically defined compound per chapter note (a).
Duty Rate — Mexico → 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 mass spectrometry data verifying molecular structure as rye ergot alkaloid
• Store and ship with stabilizers only if per chapter note (f) for preservation
• Avoid retail packaging that could trigger Chapter 30 misclassification