PharmaGrade Niacinamide 99% Crystals from Mexico
High-purity crystalline niacinamide (99%) for pharmaceutical compounding and vitamin supplement manufacturing. Falls under HTS 2936.29.16.30 as unmixed niacinamide derivative used primarily as vitamin B3. Synthetic reproduction of natural provitamin nicotinamide.
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 GC-MS certificate confirming niacinamide identity (not niacin); declare exact purity percentage; watch for FDA prior notice requirements for vitamin imports over 100kg