N-Acetylpiperazine from Mexico
N-Acetylpiperazine is a cyclic amide derivative where an acetyl group is attached to the nitrogen of piperazine, a six-membered heterocyclic ring. Classified under HTS 2924.29.95.00 as an 'other' cyclic amide not covered by principal headings. Used as an intermediate in pharmaceutical synthesis for drugs like ofloxacin.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide manufacturer's specification sheet confirming amide function; watch for piperazine base classification if acetylation incomplete; register under TSCA if new chemical