Pseudoephedrine Impurity Standard (Norephedrine HCl) from Canada
Certified reference material of norephedrine hydrochloride used as impurity standard in pseudoephedrine quality control testing. Classified under HTS 2939.44.00.00 as pure norephedrine salt for laboratory use. Essential for HPLC method validation in pharmaceutical QC labs.
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
• Include certificate of analysis with assigned purity value; small package lab chemicals still need TSCA notification
• Avoid bulk classification for research quantities