L-Proline from Canada
L-Proline is an imino acid critical for collagen synthesis, used in wound healing supplements and biotech. HTS 2922.49.49 includes this cyclic secondary amine amino acid with oxygen function. Essential for protein structure research.
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
• Distinguish from hydroxyproline (different HTS); provide amino acid sequencing data
• Hygroscopic nature requires moisture-proof packaging declarations
• For research, include Material Safety Data Sheet (MSDS) with entries