DL-Tryptophan from Japan
DL-Tryptophan is a racemic mixture of the aromatic amino acid tryptophan, containing an indole ring and a single carboxylic acid oxygen function. It is a separate chemically defined organic compound classified under heading 29.22. The mixture of isomers is covered by Chapter note 1(b).
Duty Rate — Japan → Canada
0%
Import Tips
• Verify the product is not a peptide
• Provide the CAS number and purity certificate
• If imported as a supplement, check Natural Health Product regulations