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2934.99.03.00/2-Acetylbenzo(b)thiophene/Canada

2-Acetylbenzo(b)thiophene from Canada

2-Acetylbenzo(b)thiophene is a specific aromatic heterocyclic compound featuring a thiophene ring fused to a benzene ring with an acetyl group at the 2-position. It falls under HTS 2934.99.03.00 as one of the explicitly named 'other heterocyclic compounds' in the aromatic category of Chapter 29. This chemically defined organic compound is used as an intermediate in pharmaceutical and agrochemical synthesis.

Duty Rate — Canada → United States

100%

Rate breakdown

9903.04.60100%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)
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Import Tips

• Provide detailed chemical analysis (NMR, MS) confirming identity as 2-Acetylbenzo(b)thiophene to match the specific HTS listing

• Include Safety Data Sheets (SDS) and purity certificates (>98%) as U.S

• Customs requires verification for named chemical compounds

• Avoid misclassification as general thiophene derivatives (2934.99.90); explicit naming requires precise documentation