Pharma-Grade GDL for Effervescent Tablets from Mexico
Pharmaceutical-grade glucono-δ-lactone for use in effervescent formulations and controlled-release medications, under HTS 2932.20.50.20. This pure heterocyclic compound provides gradual acidification without taste issues of citric acid. Complies with Chapter 29 as a separate chemically defined organic compound.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
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 DMF (Drug Master File) reference if destined for pharma; FDA requires advance notice via Prior Notice system
• Microbial limits testing (<1000 CFU/g) essential; common cause of pharma import refusals
• Separate from food shipments to avoid cross-contamination concerns during customs inspection