Xanthosine Monophosphate (XMP) from Japan
XMP serves as intermediate in guanosine biosynthesis pathways. Classified HTS 2934.99.39.00 per U.S. note 3 for listed heterocyclic nucleic acids.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include UV absorbance ratios confirming purine structure
• Monitor for IMP conversion during storage; use stabilizers
• Provide GMP manufacturing certification for pharma intermediates