Thiamine Tetrahydrofurfuryl Disulfide (TTFD) from Mexico
TTFD is an allithiamine-type derivative of vitamin B1 with superior transdermal absorption properties. Classified under HTS 2936.22.00.00 as it functions primarily as a vitamin derivative in nutritional supplements. Popular in Japan for energy and cognitive support formulations.
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
• Sulfur odor may trigger additional agricultural inspections; include odor profile in SDS
• Declare Japanese Pharmacopeia compliance if applicable for easier acceptance
• Batch testing for furfuryl alcohol residuals required by FDA import alerts