Aminophylline USP Powder from Japan
Aminophylline is a theophylline derivative containing a hydrogenated pyrimidine ring structure, used as a bronchodilator for respiratory conditions. It falls under HTS 2933.59.95.00 as a heterocyclic compound with nitrogen hetero-atoms only, specifically in the 'other' category for pyrimidine ring compounds. This classification applies to its pure chemical form for pharmaceutical use.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Provide Certificate of Analysis (CoA) confirming purity and pyrimidine structure to avoid reclassification
• Ensure DEA compliance if used in controlled formulations; common pitfall is missing pharmacopeia reference
• Declare as bulk API only; retail packaging shifts to Chapter 30