Tiobutramine (active pharmaceutical ingredient) from China
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 — China → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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