Carbazole (Pharmaceutical Grade) from Canada
Carbazole serves as intermediate drug substance, an amino-phenol fused ring compound used in pharmaceutical synthesis. Imported as chemically defined compound under drugs subheading when pharma-specified.
Duty Rate — Canada → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Specify pharma end-use in entry summary; purity >99% required
• Pitfall: industrial grade shifts classification