Tiobutramine (active pharmaceutical ingredient) from Mexico
Tiobutramine is an organo-sulfur veterinary drug intermediate with thio-butyl side chain for animal health applications. Sulfur-carbon direct linkage qualifies it under heading 2930 organo-sulfur compounds. Falls in drug subheading 2930.90.92.35 despite veterinary focus.
Duty Rate — Mexico → United States
3.7%
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
• Distinguish from human drugs with veterinary labeling to avoid FDA human drug pathways
• Provide target species documentation for CVM import alerts
• Bulk chemical appearance common pitfall; use pharma-grade COA