Fenetylline Sulfate from Mexico
The sulfate salt of fenetylline (INN), a synthetic central nervous system stimulant alkaloid combining theophylline and amphetamine structures. HTS 2939.51.00.00 explicitly covers this compound and all its salts as per tariff heading.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• File with U.S
• Customs under controlled substance provisions 30 days prior
• Include spectroscopic data (NMR, MS) proving identity as fenetylline salt
• Watch for chapter exclusions - pure compounds only, not formulations