Sodium Keratan Sulfate (Porcine Nasal Cartilage) - Biotin Labeled

Cosmo Bio

Catalog No.: CSR-BEKS2(PNC)1

Keratan sulfate (KS) is a sulfated glycosaminoglycan composed of repeating disaccharide units of N-acetyl-D-glucosamine (GlcNAc) and Galactose (Gal). KS is abundant in cartilage and cornea, and exists as unbranched polysaccharide chains covalently linked to the protein core of proteoglycans. This product is 1mg lyophilizate of biotin-labeled KS purified from porcine nasal cartilage. Biotin molecules are chemically attached to amine group which was introduced to the reducing end of KS according to the method of Raja et al.1).

Binding ability to avidin and anti-KS antibody (5D4) were conformed by the binding assay. The enclosed Certification of Analysis lists actual values for product specifications such as Actual Content, Molecular Weight or Introduction Ratio of Biotin.

Documentation Requirements for Order Placement

Import Permit Required for US Customers
This product contains animal-derived, plant-derived, or agricultural materials, such as bovine, porcine, equine, etc., components. These are regulated materials and permits ensure they are imported into the United States in compliance with USDA requirements.
Prior to placing an order, customers are required to apply for a VS 16-3 Import Permit directly from the US government regulatory agency, APHIS (Animal and Plant Health Inspection Service). Please click here for full guidance on applying for an import permit.
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Direct Shipment and Fees Authorization
This item must ship directly from our Japan office due to permit requirements, temperature sensitivity, or other shipping considerations. Access the direct shipment authorization form in the Documents section above. Please download and fill in the document as requested. Submit the completed document with your order to orders@cosmobiousa.com.