L-Norephedrine Hydrobromide from Canada
L-norephedrine hydrobromide is the levorotatory enantiomer salt used in specialized pharmaceutical applications. Classified under HTS 2939.44.00.00 as a norephedrine salt derivative of ephedra alkaloids. Applied in bronchodilator and nasal spray formulations.
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
• Submit enantiomeric excess (ee%) certificate; hydrobromide salts face bromide residue testing requirements
• Track List I chemical status for diversion control