Oxacillin Sodium Monohydrate API from Mexico
Oxacillin sodium monohydrate is a first-generation isoxazolyl penicillin explicitly covered by HTS 2941.10.30.00 due to its penicillanic acid core and sodium salt. Used in hospital settings for methicillin-sensitive Staphylococcus aureus infections, this API form is for parenteral administration.
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
• File prior notice via FDA's PNSI system at least 2 hours before arrival for air/land imports
• Include heavy metals certificate (<20 ppm total) per USP <231> to meet pharmacopeial standards
• Avoid mislabeling monohydrate vs anhydrous forms, which affects potency calculations