4-NH2-C6H4CONH2 Crystals from Canada
Crystalline 4-NH2-C6H4CONH2 (p-aminobenzamide) is a key building block for sulfonamide antibiotics and dyes. Fits HTS 2924.29.77.30 as 'p-Aminobenzamide' specific, an aromatic amide per chapter hierarchy. Chemically defined without exclusions like retail colorings.
Duty Rate — Canada → 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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Use structural formula on labels for CBP verification; ensure <10ppm heavy metals
• Common issue: confusion with sulfanilamide (2930)