Choline Theophyllinate from Canada
Choline theophyllinate is a quaternary ammonium salt of theophylline for gastric protection. Classified HTS 2939.59.00.00 following parent alkaloid per salt classification rules. Highly soluble for oral solutions.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Quat salt conductivity testing; no choline bitartrate confusion; bulk only, no retail packs