Thiosemicarbazide from Canada
Thiosemicarbazide is a thio-ureine derivative used in metal chelation and antiviral research. Covered by HTS 2924.21.50.00 as 'other' ureines and derivatives; salts thereof.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6093.5%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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Heavy metal chelation data for lab safety documentation
• Schedule 3 chemical if >100g quantities (DEA watch)
• FTIR spectrum confirming thiosemicarbazide tautomer