Orotidine Monophosphate (OMP) from Mexico
OMP is crucial in pyrimidine biosynthesis for UMP production. HTS 2934.99.39.00 applies as aromatic heterocyclic nucleotide in additional U.S. note 3.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6093.5%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
• Verify orotate decarboxylase substrate activity
• Lyophilize for stability; avoid moisture exposure
• Include metabolic pathway end-use statement