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Dapsone impurities and related standards

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

In this group: 17 impurity reference standards · 6 stable isotope labelled standards. CAS numbers are listed for 23 of 23; 23 entries carry a structure drawing.

All entries — structure, identifiers and pack sizes

  • Dapsone EP Impurity A

    CAS 25963-47-7RS-D108008

    Formula C12H11NO3S MW 249.29

    COA per lot

  • Dapsone EP Impurity B

    CAS 7019-01-4RS-D108001

    Formula C12H11NO2S MW 233.29

    COA per lot

  • Dapsone EP Impurity C

    CAS 54616-64-7RS-I003210

    Formula C24H20N2O5S2 MW 480.56

    COA per lot

  • Dapsone EP Impurity D

    CAS 27147-69-9RS-I003157

    Formula C12H12N2O2S MW 248.3

    COA per lot

  • Dapsone Hydroxylamine-d4

    CAS 1330185-26-6RS-D108005

    Formula C12H8D4N2O3S MW 268.32

    COA per lot

  • Dapsone-15N2

    CAS 287476-19-1RS-D108016

    Formula C12H1215N2O2S MW 250.29

    COA per lot

  • Dapsone Impurity 2

    CAS 26815-49-6RS-D108009

    Formula C12H11NO2S MW 233.29

    COA per lot

  • Dapsone Impurity 3

    CAS 2514651-21-7RS-D108007

    Formula C24H22N4O4S2 MW 494.58

    COA per lot

  • Dapsone Impurity 4

    CAS 80-00-2RS-D108014

    Formula C12H9ClO2S MW 252.71

    COA per lot

  • Dapsone Impurity 11

    CAS 14665-52-2RS-I003100

    Formula C12H8N2O6S MW 308.26

    COA per lot

  • Dapsone Impurity 12

    CAS 53347-49-2RS-I003209

    Formula C12H12N2O2S MW 248.3

    COA per lot

  • Dapsone Impurity 13

    CAS 116435-84-8RS-D108003

    Formula C12H12N2O2S MW 248.3

    COA per lot

  • Dapsone Impurity 13

    CAS 599-61-1RS-D108013

    Formula C12H12N2O2S MW 248.3

    COA per lot

  • Dapsone Impurity 15

    CAS 119-59-5RS-D108004

    Formula C12H12N2OS MW 232.3

    COA per lot

  • Dapsone Impurity 15

    CAS 34262-32-3RS-D108010

    Formula C12H12N2O2S MW 248.3

    COA per lot

  • Dapsone Impurity 16

    CAS 101-59-7RS-D108002

    Formula C12H10N2O2S MW 246.28

    COA per lot

  • Dapsone Impurity 18

    CAS 53566-73-7RS-D108012

    Formula C12H8N2O4S MW 276.27

    COA per lot

  • Dapsone Impurity 19

    CAS 21387-93-9RS-D108006

    Formula C12H8N2O4S MW 276.27

    COA per lot

  • Dapsone Impurity 20

    CAS 154043-92-2RS-U016146

    Formula C36H24O9S3 MW 696.76

    COA per lot

  • Dapsone Impurity 21

    CAS 872811-58-0RS-D108018

    Formula C12H11NO4S MW 265.28

    COA per lot

  • Dapsone Impurity 22

    CAS 2755500-71-9RS-D108015

    Formula C24H20N4O4S2 MW 492.57

    COA per lot

  • Dapsone Impurity 23

    CAS 64896-96-4RS-D108017

    Formula C12H10ClNO2S MW 267.73

    COA per lot

  • Dapsone Impurity 34

    CAS 36679-40-0RS-D108011

    Formula C12H12N2O4S MW 280.3

    COA per lot

Frequently asked

How many Dapsone-related reference standards do you hold?
23 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 23 of them and 23 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Dapsone 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 Dapsone 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 Dapsone 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.