Gentamicin Sulfate Powder from Mexico
Gentamicin sulfate is a natural aminoglycoside antibiotic complex produced by Micromonospora purpurea, effective against gram-negative bacteria in severe infections. Classified under HTS 2941.90.10.10 as a natural aminoglycoside, it qualifies as a chemically defined organic compound meeting Chapter 29 note (a) for separate compounds. Bulk powder form is typical for pharmaceutical manufacturing.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
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
• Provide microbial origin documentation and HPLC chromatograms showing C1, C1a, C2, C2a components typical of natural gentamicin
• Comply with FDA bioequivalence standards if referencing ANDAs; declare exact sulfate content
• Watch for misdeclaration as veterinary grade, which may trigger different residue testing requirements