Adenosylcobalamin (Cobamamide) from Mexico
Adenosylcobalamin, the mitochondrial coenzyme form of Vitamin B12 (cobamamide), supplied as pure powder for supplement manufacturing. HTS 2936.26.00.00 covers this B12 derivative with full vitamin activity, chemically defined per Chapter Notes. Less stable form requiring specialized handling.
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
• Specify anaerobic packaging requirements; provide HPLC assay certificates; nitrogen-flushed shipping mandatory to prevent oxidation