Cholestyramine USP Ion-Exchange Beads
Uniform spherical beads of cross-linked polyvinylbenzyltrimethylammonium chloride (Cholestyramine USP) designed for bile acid sequestration in cholesterol-lowering therapies. Classified under HTS 3914.00.20.00 due to its exact chemical specification as a primary-form ion-exchanger.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If uncross-linked polyethylene base polymer
Lacks cross-linking and specific quaternary ammonium substitution, falling to base polymer of ethylene.
If processed into rigid filtration cartridges
Fabricated into articles of plastics moves from primary form to other plastic items.
If for veterinary use in animal feed additives
Veterinary medicaments have separate classification regardless of polymer form.
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Import Tips & Compliance
• Include particle size distribution and swelling index test data in documentation; ensure bead form doesn't trigger 'articles' classification under 3917+; watch for FDA prior notice requirements as pharmaceutical precursor
Related Products under HTS 3914.00.20.00
Cholestyramine Resin USP Powder
Cross-linked polyvinylbenzyltrimethylammonium chloride, known as Cholestyramine Resin USP, is a pharmaceutical-grade ion-exchange resin used primarily to bind bile acids in the intestine for treating hypercholesterolemia. It falls under HTS 3914.00.20.00 as it precisely matches the specified polymer in primary form with >95% monomer content per subheading notes.
Pharmaceutical Grade Cholestyramine Resin
High-purity Cholestyramine resin USP, cross-linked polyvinylbenzyltrimethylammonium chloride, supplied as fine powder for compounding into lipid-lowering medications. HTS 3914.00.20.00 applies as it meets the precise polymer definition in primary (unprocessed) form.
USP Cholestyramine for Compounding
Cross-linked polyvinylbenzyltrimethylammonium chloride USP grade specifically for pharmacy compounding of custom cholesterol medications. This ion-exchanger in primary powder form is definitively HTS 3914.00.20.00 per the subheading's explicit naming.
Cross-Linked Cholestyramine USP Granules
Granular form of Cholestyramine resin USP (cross-linked polyvinylbenzyltrimethylammonium chloride) optimized for uniform dispersion in oral suspensions. Remains primary form ion-exchanger under HTS 3914.00.20.00 as granulation doesn't constitute fabrication.