Cimetidine Base from China
Cimetidine is an imidazole-containing histamine H2-receptor antagonist used to treat peptic ulcers and GERD. As a bulk pharmaceutical chemical with unfused imidazole ring, it falls under HTS 2933.29.90.00 for other heterocyclic compounds with nitrogen hetero-atoms only.
Duty Rate — China → United States
44%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include spectral analysis (NMR, IR) confirming imidazole ring presence for Customs verification
• Register as bulk drug substance with FDA prior to import to avoid detention
• Label containers with CAS number 51481-61-9 and 'For Manufacturing Use Only' to prevent retail classification