Methylephedrine from Mexico
Methylephedrine is an N-methylated ether derivative of ephedrine, synthesized as a bronchodilator in some Asian markets. Classified in HTS 2939.49.0300 covering ethers and other derivatives of ephedra alkaloids. The modification maintains its classification within the specific ephedra subheading.
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
• Provide synthesis pathway documentation proving ephedrine origin for derivative status
• Monitor CITES permits if plant-extracted precursor used in synthesis
• Label as 'not for human consumption' if research-grade to avoid drug regulations