2922.39.45.00/4-Aminophenyl 2-Thienyl Ketone/Japan

4-Aminophenyl 2-Thienyl Ketone from Japan

4-Aminophenyl 2-thienyl ketone combines aromatic amino functionality with heterocyclic thienyl ketone. Classified as aromatic amino-ketone under 2922.39.4500 since principal chain is aromatic. Used in pharmaceutical research.

Duty Rate — Japan → United States

15%

Rate breakdown

9903.04.628.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% 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 ring analysis confirming aromatic principal chain

• Heterocyclic content <50% keeps aromatic classification

• Research chemical import may require end-use statement