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
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Specify pharma end-use in entry summary; purity >99% required
• Pitfall: industrial grade shifts classification