Erythromycin Stearate from Mexico
Erythromycin stearate is the stearate salt derivative of the macrolide antibiotic erythromycin, used primarily to treat bacterial infections such as respiratory tract infections and skin infections. It falls under HTS 2941.50.00.00 as a salt of erythromycin, explicitly covered by the heading for antibiotics in this category. This chemically defined organic compound is supplied as a pharmaceutical intermediate or active ingredient.
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
• Verify purity certificates and batch analysis to meet FDA import requirements; ensure proper cold chain documentation if temperature-sensitive
• Avoid misclassification as finished dosage forms