2922.39.45.00/2-(4-Aminobenzoyl)thiophene/Canada

2-(4-Aminobenzoyl)thiophene from Canada

2-(4-Aminobenzoyl)thiophene combines aminophenyl ketone with thiophene heterocycle. Aromatic amino-ketone classification under 2922.39.4500 prevails over heterocyclic aspects. Research chemical.

Duty Rate — Canada → United States

100%

Rate breakdown

9903.04.6093.5%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)

Calculate with your customs value Verify classification with AI

Import Tips

• Aromatic chain principal per classification rules

• Low volume research imports need end-use certification

• Stability data for thiophene derivatives