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Trospium impurities and related standards

Trospium is held here as a working collection of 43 reference materials across 2 CAS numbers. Within the range, 1 EP-designated impurities are named explicitly. 33 of the entries are impurity-type materials of the parent, 2 are salt or counter-ion variants and 1 carry a deuterium label and 1 are nitrosamine analogues. 3 entries carry a verified structure drawing, a coverage of 7%; the rest are listed without a structure rather than with an unverified one. 3 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 40 remain tier C and are kept for search coverage. The practical difficulty with a series of this size is not obtaining any one impurity but demonstrating that the set is complete. A validation package normally needs the specified impurities plus the unspecified ones above the reporting threshold, and the second group is where a catalogue either holds the material or does not. Where the impurity is a chiral species, the enantiomeric ratio belongs on the specification alongside the chemical purity, because an achiral method reports the two together as one peak.

Sources: DailyMed (US NLM) - TROSPIUM CHLORIDE CAPSULE, EXTENDED RELEASE [GRANULES PHARMACEUTICALS INC.].

3 reference standards related to Trospium held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.

CAS numbers are listed for 3 of 3; 3 entries carry a structure drawing.

On this page

3 reference standards

All entries — structure, identifiers and pack sizes

  • Trospium EP Impurity C

    CAS 99945-31-0C11H20NO

    MW 182.3

    IN STOCKRS-T410001

  • Benzilide

    CAS 467-32-3C28H20O4

    MW 420.5

    IN STOCKRS-I012225

  • Trospium Impurity 22

    CAS not assignedC35H33NO5

    MW 547.24

    BACK ORDERRS-I001BDS

3 reference standards

Frequently asked

How many Trospium-related reference standards do you hold?
3 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 3 of them and 3 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Trospium impurity that is not listed here?
Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.
What documentation is supplied with Trospium impurities?
Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.
Do you publish prices or a lead time for Trospium impurities?
No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.

Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to sales@rssechem.com.