Diltiazem Hydrochloride from Mexico
Diltiazem hydrochloride is a benzothiazepine derivative calcium channel antagonist used for hypertension, angina, and arrhythmias. Its nitrogen-containing heterocyclic structure qualifies it for HTS 2933.99.53.00 as an aromatic cardiovascular drug. Imported typically as bulk API powder for tablet manufacturing.
Duty Rate — Mexico → 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
• Provide USP/EP certificate and stability data; impurities must be <0.1% per ICH guidelines
• Use tamper-evident packaging to prevent contamination claims at customs
• Avoid classifying with excipients - pure API only under this code; mixtures go to 3003