Quinidine Base from Mexico
Quinidine free base extracted from cinchona bark, precursor for all quinidine salts used in cardiology. HTS 2939.20.0050 as other cinchona alkaloid. High enantiomeric purity required.
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
• Chiral HPLC confirming >99% (-)-quinidine
• Absence of quinine diastereomer <0.2%
• Storage under nitrogen to prevent oxidation