Impurity reference standards
Dapsone impurities & reference standards
Characterised Dapsone impurities, degradation products and related compounds for analytical method development, validation, QC release and regulatory filings.
32reference materials
5isotope-labelled
COAHPLC · NMR · MS on request
![Benzenamine,4,4`-[oxybis(4,1-phenylenesulfonyl)]bis chemical structure](/media/structures/CAIMXHCQEIPTCR-UHFFFAOYSA-N.svg)
Benzenamine,4,4`-[oxybis(4,1-phenylenesulfonyl)]bis
- CAS
- 54616-64-7
- Formula
- C24H20N2O5S2
- MW
- 480.6 g/mol
VQ-036545
![N-[4-[(4-Aminophenyl)sulfonyl]phenyl]formamide chemical structure](/media/structures/OUBLSNZSHXQKRB-UHFFFAOYSA-N.svg)
N-[4-[(4-Aminophenyl)sulfonyl]phenyl]formamide
- CAS
- 21501-24-6
- Formula
- C13H12N2O3S
- MW
- 276.31 g/mol
VQ-025189
N,N'-(Sulfonylbis(4,1-phenylene))bis(hydroxylamine)
- CAS
- 36679-40-0
- Formula
- C12H12N2O4S
- MW
- 280.3 g/mol
VQ-047938
FAQs — Dapsone impurities
Which Dapsone impurities do you supply?
We list 32 Dapsone-related reference materials, including process impurities, degradation products, stable-isotope-labelled standards and related compounds. Each is supplied with a COA, and characterisation data (HPLC, 1H-NMR, MS, IR) can be provided on request.
What are Dapsone impurity standards used for?
They are used for analytical method development and validation, impurity identification and quantification, forced-degradation and stability studies, and to support ANDA, DMF and other regulatory submissions under ICH Q3A/Q3B (and ICH M7 for mutagenic impurities).
Can you synthesise a Dapsone impurity that is not listed?
Yes. Our custom synthesis service can prepare and characterise unlisted impurities, metabolites and labelled analogues from milligram to gram scale. Share the structure or name and required quantity for a quotation.
Request Dapsone impurity standards
We reply within one business day with price, pack options, lead time and documentation.