Cyclic Adenosine Monophosphate (cAMP) Sodium Salt from Canada
cAMP sodium salt is a key second messenger in cellular signaling pathways. HTS 2934.99.39.00 covers this aromatic heterocyclic nucleotide listed in U.S. note 3.
Duty Rate — Canada → 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 cyclized structure via 31P-NMR spectroscopy data
• Store and ship at -80°C to preserve signaling activity
• Include phosphodiesterase stability test results