5-Methyluridine Monophosphate from Mexico
This modified nucleotide is used in epigenetic research and antiviral drug development. Classified in HTS 2934.99.39.00 per additional U.S. note 3 for listed aromatic heterocyclic nucleic acids.
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
• Include NMR spectra and mass spectrometry data for structure verification
• Check for DEA controlled substance status if used in drug synthesis
• Use insulated packaging with gel packs for temperature-sensitive shipments