D-Arabinose [U-13C5] Uniformly Labeled from Canada
Uniformly 13C-labeled D-Arabinose (all 5 carbons) at 98+% enrichment for advanced metabolomics and flux analysis by MS/NMR. HTS 2940.00.20.00 for isotopically substituted pure sugar. Gold standard for plant cell wall biosynthesis studies.
Duty Rate — Canada → United States
60%
Rate breakdown
9903.03.1450%Articles the product of Canada as provided in subdivision (b)(3) of U.S. note 51 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• High-value item; obtain advance ruling for stable isotope classification
• Isotopic purity verified by MS; include raw spectral data with shipment
• Research institution end-use statement prevents defense-related scrutiny