Mexican Yam Diosgenin Concentrate from Mexico
Diosgenin concentrate from Dioscorea villosa (wild yam) tubers, serving as natural precursor for progesterone synthesis while qualifying as progestin intermediate. Obtained indirectly from vegetable materials through solvent extraction. HTS 2937.23.1050 includes such natural steroid precursors used hormonally.
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
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Provide phytosanitary certificates for yam tuber imports verifying disease-free status
• Declare diosgenin content percentage with NMR validation of natural stereochemistry
• Avoid conversion claims that suggest synthetic processing beyond natural extraction