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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically Cholestyramine USP but another ion-exchange resin
Other ion-exchangers based on polymers of 3901-3913 fall under the residual 'Other' subheading per chapter notes.
If pre-formulated into finished oral dosage form like tablets
Processed into medicaments shifts classification from primary polymer form to finished pharmaceutical products.
If chemically modified or blended below 95% purity threshold
Subheading notes require 95% monomer content for specific naming; blends or modified forms go to chemical preparations.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Verify USP certification and provide Certificate of Analysis (CoA) to confirm cross-linked polyvinylbenzyltrimethylammonium chloride composition; declare exact monomer content to meet 95% rule in subheading notes; avoid misclassification as unfinished pharmaceutical by including lab test results
Related Products under HTS 3914.00.20.00
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.
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.