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Sudan impurities and related standards

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

CAS numbers are listed for 5 of 5; 5 entries carry a structure drawing.

On this page

5 reference standards

All entries — structure, identifiers and pack sizes

  • Sudan Impurity 27 Monomer

    CAS 1141-59-9RS-S096001

    Formula C11H9N3O2 MW 215.21

    COA per lot
  • Sudan Impurity 33

    CAS 1220-94-6RS-S096005

    Formula C15H12N2O2 MW 252.27

    COA per lot
  • Sudan Impurity 34

    CAS 2646-15-3RS-S096003

    Formula C24H30N2O2 MW 378.52

    COA per lot
  • Sudan Impurity 37

    CAS 14233-37-5RS-S096002

    Formula C20H22N2O2 MW 322.41

    COA per lot
  • Sudan Impurity 39

    CAS 67674-26-4RS-S096004

    Formula C19H20N2O4 MW 340.38

    COA per lot

5 reference standards

Frequently asked

How many Sudan-related reference standards do you hold?
5 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 5 of them and 5 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Sudan 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 Sudan 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 Sudan 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.