Synthetic Riboflavin 98% Feed Grade from Mexico
High-purity synthetic Riboflavin produced for animal nutrition, classified as unmixed Vitamin B2 under HTS 2936.23.00.00. Meets chapter requirements for reproduced-by-synthesis vitamins used primarily as such, suitable for livestock feed fortification.
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 feed-grade specification sheet per AAFCO; ensure no anti-caking agents render it Chapter 38 preparation; declare animal use to avoid human pharma scrutiny