Pharmaceutical-Grade Carbazole Crystals (85% Purity) from Mexico
Crystalline carbazole at 85% purity by weight, sourced from high-temperature coal tar oils with predominant aromatic content. It is specifically classified under HTS 2707.99.40.00 for carbazole meeting the purity criterion, distinguishing it from lower-grade tars. Used as an intermediate in drug synthesis like carbazole alkaloids.
Duty Rate — Mexico → United States
3%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Include GMP or USP-compliant certificates if destined for pharma; still classified here unless fully medicinal
• Document distillation origin to prevent Chapter 29 shift for perceived 'finished' chemicals