L-Proline from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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