Thiamine Pyrophosphate (TPP) Cofactor from Japan
Thiamine pyrophosphate is the biologically active coenzyme form of vitamin B1, essential for carbohydrate metabolism. It qualifies under HTS 2936.22.00.00 as a thiamine derivative used primarily as a vitamin in biochemical research and therapeutics. Primarily supplied as lyophilized powder for IV formulations.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.6215%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) 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
• Include biotech end-use statement if for research to avoid pharmaceutical scrutiny
• Cold chain documentation required for lyophilized forms to maintain >95% activity
• Declare CAS number 154-87-0 on entry to facilitate chemical identification