Choline Theophyllinate from United States
Choline theophyllinate is a quaternary ammonium salt of theophylline, used for its gastric protection properties. As an organic salt of a theophylline derivative, it is classified under tariff item 2939.59.00 as 'Other', per Chapter 29 Note 5(C)(1). The product is a separate chemically defined compound.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the salt is stoichiometrically pure; excess choline may alter classification
• Provide a certificate of analysis to CBSA to verify the salt's identity
• Check if the product requires a Drug Identification Number (DIN) for sale in Canada