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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as quaternary ammonium salt precursor
Unpolymerized organic chemicals of nitrogen function classify differently from polymerized ion-exchangers.
If prepared as ion-exchange mixture with excipients
Prepared binders for foundry molds or similar uses fall under chemical preparations.
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Import Tips & Compliance
• Obtain FDA Drug Master File (DMF) reference if available; declare 'for pharmaceutical use only' to avoid cosmetic classification; test for heavy metals and microbial limits per USP monograph
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.
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.
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.