Erythromycin Estolate from Mexico
Erythromycin estolate is a lauryl sulfate ester salt derivative known for its acid stability in gastric environments for upper respiratory treatments. Falls under HTS 2941.50.00.00 as a named erythromycin derivative and salt per HTS antibiotic provisions. Bulk API form for tablet production.
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
• Monitor for hepatotoxicity warnings in labeling; provide impurity profiles under ICH guidelines
• Pitfall: mislabeling as non-pharma chemical