Niacin Acid Pharmaceutical Grade Crystals from Mexico
Crystalline form of nicotinic acid (niacin) at pharmaceutical purity levels for use in injectable or oral drug production. Falls under HTS 2936.29.1610 as unmixed pharmaceutical grade niacin per Chapter 29 organic compound definitions.
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
• Provide FDA Drug Master File (DMF) references; ensure proper stability data for crystalline form; watch for contamination risks during transport requiring sealed packaging