L-Threonine USP Grade from Canada
L-Threonine USP Grade is a pharmaceutical-grade essential amino acid used in nutritional supplements and parenteral nutrition solutions. Classified under HTS 2922.49.80.00 for amino-acids with oxygen-function limited to the carboxyl group, excluding those with multiple oxygen types. Meets USP standards for purity in medical applications.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide USP certificate of analysis for pharma import compliance; label clearly as 'not for human consumption' if feed-grade; check FDA prior notice for bulk shipments