Thiamine Tetrahydrofurfuryl Disulfide (TTFD) from China
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 — China → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 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