Phenothiazine API USP Grade from China
Pure phenothiazine (C12H9NS), the parent compound of the ring system, imported as USP-grade active pharmaceutical ingredient. Classified under HTS 2934.30.27.00 as the base structure for drug synthesis.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Confirm >99% purity with HPLC certificate meeting Chapter 29 chemically defined compound requirements
• Include intended downstream synthesis documentation to support drug classification
• Avoid veterinary bulk packaging which might trigger different Chapter 30 provisions