Erythromycin Base USP from Mexico
Erythromycin base USP is the pure, non-salt form of the antibiotic meeting United States Pharmacopeia standards for potency against streptococci. Though 'base,' it qualifies under HTS 2941.50.00.00 as the parent erythromycin compound for derivatives/salts heading. Used as reference standard or direct API.
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
• Include USP CoA and microbial limits testing; store under inert atmosphere
• Avoid exposure to light/moisture during shipping