L-Serine from Canada
L-Serine is a polar amino acid used in cosmetics, pharmaceuticals, and as a precursor for neurotransmitters. Classified under HTS 2922.49.49 as an oxygen-function amino acid (additional hydroxyl group permitted). High purity for biotech and skincare formulations.
Duty Rate — Canada → United States
14.2%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Document hydroxyl content doesn't create multiple oxygen functions per chapter notes
• For cosmetic use, comply with FDA color additive rules if dyed per chapter note (g)
• Batch GMP certification speeds clearance for pharma/cosmetic imports