Isoquinoline for Dye Coupling from Canada
High purity isoquinoline used as dye coupler intermediate, classified as pure compound in HTS 2933.49.15.00 despite end use. Not excluded under chapter note (g).
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6094.2%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
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
• End use statements should not override chemical classification
• Confirm not put up for retail sale to avoid Chapter 32