Xanthosine Monophosphate (XMP) from Mexico
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 — Mexico → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include UV absorbance ratios confirming purine structure
• Monitor for IMP conversion during storage; use stabilizers
• Provide GMP manufacturing certification for pharma intermediates