Cholestyramine resin

Cholestyramine resin: bile acid sequestrant (anion-exchange resin).

Cholestyramine resin is tested to its USP monograph. Pricing is quoted.

Compound data

CAS number

11041-12-6

Formula

n/a

Molecular weight

n/a

Type

Bile acid sequestrant (anion-exchange resin)

Structure and names

Identity: Cholestyramine resin

How Vanguard tests Cholestyramine resin

The USP monograph covers identity by infrared spectroscopy, pH, loss on drying, residue on ignition, dialyzable quaternary amines by UV-visible absorbance, chloride content by potentiometric titration, and exchange capacity by HPLC (glycocholate binding).

Pricing is quoted. Send the material and the monograph edition your specification uses.

What's reported

  • Results of each monograph test, against the monograph limits or your specification

Tests and prices

Pricing is quoted. Testing to the USP monograph is priced for the tests your specification needs.

Sample amount and turnaround

We confirm the sample amount and turnaround with your quote. Send the material sealed and labeled, with the monograph and specification it should meet.

Salts, forms and compendial references

  • Cholestyramine Resin (CAS 11041-12-6)
  • Cholestyramine
  • Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Cholestyramine resin testing

Is the $250 test the same as USP monograph testing?

No. Cholestyramine resin does not fit the standard $250 identity, purity and quantity test, so it is tested to the USP Cholestyramine monograph. Pricing is quoted.

Why does cholestyramine have no single formula or molecular weight?

Cholestyramine is a cross-linked styrene and divinylbenzene polymer carrying quaternary ammonium groups in the chloride form. It is insoluble, so it is characterized by what it binds rather than by a molecular weight.

How is the amount of cholestyramine measured?

The USP assay measures exchange capacity, meaning how much bile salt a known weight of resin binds, by measuring what is left in solution by HPLC.

What forms does cholestyramine arrive in?

Usually a powder for oral suspension that contains sugar or sweeteners, flavors and other excipients. Tell us the product form so the binding test is set up correctly.

Sources

Identity facts from the USP monograph header for this compound.

Order

Start an order online, or send the compound name and the tests you need for a quote.