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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If extruded into rigid tubes for medical delivery
Fabricated plastic articles like tubes shift from primary polymers.
If mixed with medicaments in bulk medicinal form
Bulk medicaments containing polymers classify under Chapter 30.
If based on different primary polymer like polystyrene without cross-linking
Subheading notes require predominant monomer match; different base changes heading.
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Import Tips & Compliance
• Provide compounding pharmacy end-user letters; comply with Section 503A/B outsourcing facility rules; avoid bulk packaging over 25kg to prevent 'industrial' reclassification
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.
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.
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.