Xylose Tetraacetate from Mexico
Xylose tetraacetate protects all four hydroxyls of xylose for hemicellulose fragment synthesis. HTS 2940.00.60.00 classification as chemically pure sugar ester applies to this pentose derivative. Used in biofuel precursor and xylanase substrate research.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6094.2%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Confirm pentose vs hexose via periodate oxidation test; Hygroscopic - use sealed desiccated packaging; Biofuel precursor import license may be required