Dapsone Related Compounds & Impurities

Dapsone is a sulfone antibiotic and anti-inflammatory that inhibits dihydropteroate synthase in bacteria and has immunomodulatory properties, used for multidrug leprosy therapy, dermatitis herpetiformis and PCP prophylaxis.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Dapsone reference standards, pharmacopeial and non-pharmacopeial Dapsone impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Dapsone-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Pharmaceutical Reference Standards / Impurity Standards

Dapsone
Dapsone
  • CAT. No.D570000
  • CAS. No.80-08-0
  • Mol. F.C12H12N2O2S
  • Mol. W.248.30 g/mol
  • Stock Status:Instock
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N-Acetyl Dapsone
N-Acetyl Dapsone
  • CAT. No.D570001
  • CAS. No.565-20-8
  • Mol. F.C14H14N2O3S
  • Mol. W.290.34 g/mol
  • Stock Status:Instock
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Dapsone Impurity 13
Dapsone Impurity 13
  • CAT. No.D570002
  • CAS. No.599-61-1
  • Mol. F.C12H12N2O2S
  • Mol. W.248.30 g/mol
  • Stock Status:Instock
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Dapsone EP Impurity A
Dapsone EP Impurity A
  • CAT. No.D570003
  • CAS. No.25963-47-7
  • Mol. F.C12H11NO3S
  • Mol. W.249.29 g/mol
  • Stock Status:Instock
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Dapsone Impurity 11
Dapsone Impurity 11
  • CAT. No.D570004
  • CAS. No.80-07-9
  • Mol. F.C12H8Cl2O2S
  • Mol. W.287.16 g/mol
  • Stock Status:Instock
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4-amino-4`-Chloro Diphenyl sulphone
4-amino-4`-Chloro Diphenyl sulphone
  • CAT. No.D570005
  • CAS. No.7146-68-1
  • Mol. F.C12H10ClNO2S
  • Mol. W.267.70 g/mol
  • Stock Status:Instock
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Dapsone Impurity 12
Dapsone Impurity 12
  • CAT. No.D570006
  • CAS. No.80-09-1
  • Mol. F.C12H10O4S
  • Mol. W.250.27 g/mol
  • Stock Status:Instock
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Dapsone Impurity 5
Dapsone Impurity 5
  • CAT. No.D570007
  • CAS. No.27147-69-9
  • Mol. F.C12H12N2O2S
  • Mol. W.248.31 g/mol
  • Stock Status:Custom Synthesis
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4-Nitro-4-aminodiphenyl Sulfone
4-Nitro-4-aminodiphenyl Sulfone
  • CAT. No.D570009
  • CAS. No.1948-92-1
  • Mol. F.C12H10N2O4S
  • Mol. W.278.28 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 26
Dapsone Impurity 26
  • CAT. No.D570010
  • CAS. No.1156-50-9
  • Mol. F.C12H8N2O6S
  • Mol. W.308.26 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 1
Dapsone Impurity 1
  • CAT. No.D570011
  • CAS. No.80-00-2
  • Mol. F.C12H9ClO2S
  • Mol. W.252.72 g/mol
  • Stock Status:Instock
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Bis(2-nitrophenyl) Sulfide
Bis(2-nitrophenyl) Sulfide
  • CAT. No.D570012
  • CAS. No.22100-66-9
  • Mol. F.C12H8N2O4S
  • Mol. W.276.27 g/mol
  • Stock Status:Custom Synthesis
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2,2'-Sulfonylbis(nitrobenzene)
2,2'-Sulfonylbis(nitrobenzene)
  • CAT. No.D570013
  • CAS. No.14665-52-2
  • Mol. F.C12H8N2O6S
  • Mol. W.308.27 g/mol
  • Stock Status:Custom Synthesis
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2,2'-Sulfonyldianiline
2,2'-Sulfonyldianiline
  • CAT. No.D570014
  • CAS. No.53347-49-2
  • Mol. F.C12H12N2O2S
  • Mol. W.248.30 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 10
Dapsone Impurity 10
  • CAT. No.D570015
  • CAS. No.116435-84-8
  • Mol. F.C12H12N2O2S
  • Mol. W.248.30 g/mol
  • Stock Status:Instock
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Benzenamine,4,4`-[oxybis(4,1-phenylenesulfonyl)]bis
Benzenamine,4,4`-[oxybis(4,1-phenylenesulfonyl)]bis
  • CAT. No.D570016
  • CAS. No.54616-64-7
  • Mol. F.C24H20N2O5S2
  • Mol. W.480.56 g/mol
  • Stock Status:Instock
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4,4-Oxybis[p-(phenylsulfonylaniline)] Dihydrochloride
4,4-Oxybis[p-(phenylsulfonylaniline)] Dihydrochloride
  • CAT. No.D570016A
  • CAS. No.54616-64-7(FreeBase)
  • Mol. F.C24H20N2O5S2.HCl
  • Mol. W.553.48 g/mol
  • Stock Status:Custom Synthesis
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2-4-Diamino Diphenyl sulphone
2-4-Diamino Diphenyl sulphone
  • CAT. No.D570017
  • CAS. No.27147-69-9
  • Mol. F.C12H12N2O2S
  • Mol. W.248.30 g/mol
  • Stock Status:Instock
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4-Phenylsulfonylaniline
4-Phenylsulfonylaniline
  • CAT. No.D570018
  • CAS. No.7019-01-4
  • Mol. F.C12H11NO2S
  • Mol. W.233.29 g/mol
  • Stock Status:Instock
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4-Amino-4-chlorodiphenyl Sulfone
4-Amino-4-chlorodiphenyl Sulfone
  • CAT. No.D570019
  • CAS. No.7146-68-1
  • Mol. F.C12H10ClNO2S
  • Mol. W.267.73 g/mol
  • Stock Status:Custom Synthesis
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4-amino-2-chlorodiphenylsulfone
4-amino-2-chlorodiphenylsulfone
  • CAT. No.D570020
  • CAS. No.NA
  • Mol. F.C12H10ClNO2S
  • Mol. W.267.73 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Hydroxylamine
Dapsone Hydroxylamine
  • CAT. No.D570021
  • CAS. No.32695-27-5
  • Mol. F.C12H12N2O3S
  • Mol. W.264.30 g/mol
  • Stock Status:Instock
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Dapsone N-Dimer
Dapsone N-Dimer
  • CAT. No.D570022
  • CAS. No.NA
  • Mol. F.C24H21N3O4S2
  • Mol. W.479.57 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 16
Dapsone Impurity 16
  • CAT. No.D570023
  • CAS. No.148301-96-6
  • Mol. F.C12H10ClNO2S
  • Mol. W.267.73 g/mol
  • Stock Status:Instock
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Acedapsone
Acedapsone
  • CAT. No.D570025
  • CAS. No.77-46-3
  • Mol. F.C16H16N2O4S
  • Mol. W.332.40 g/mol
  • Stock Status:Custom Synthesis
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4,4~-Sulfonyldibenzoic acid
4,4~-Sulfonyldibenzoic acid
  • CAT. No.D570026
  • CAS. No.2449-35-6
  • Mol. F.C14H10O6S
  • Mol. W.306.30 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Dimer Impurity
Dapsone Dimer Impurity
  • CAT. No.D570027
  • CAS. No.NA
  • Mol. F.C24H22N4O4S2
  • Mol. W.494.59 g/mol
  • Stock Status:Custom Synthesis
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2-((4-aminophenyl)sulfonyl)aniline
2-((4-aminophenyl)sulfonyl)aniline
  • CAT. No.D570028
  • CAS. No.NA
  • Mol. F.C12H12N2O2S
  • Mol. W.248.3 g/mol
  • Stock Status:Custom Synthesis
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DAPSONE LACTOSE ADDUCT MIXTURE OF ISOMERS
DAPSONE LACTOSE ADDUCT MIXTURE OF ISOMERS
  • CAT. No.D570029
  • CAS. No.NA
  • Mol. F.NA
  • Mol. W.NA
  • Stock Status:Custom Synthesis
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4,4-Bis(4-aminophenylsulfonyl)-azobenzene
4,4-Bis(4-aminophenylsulfonyl)-azobenzene
  • CAT. No.D570031
  • CAS. No.NA
  • Mol. F.C24H20N4O4S2
  • Mol. W.492.57 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 30
Dapsone Impurity 30
  • CAT. No.D570033
  • CAS. No.1774-38-5
  • Mol. F.C12H8N2O5S
  • Mol. W.292.27 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 24
Dapsone Impurity 24
  • CAT. No.D570034
  • CAS. No.119-59-5
  • Mol. F.C12H12N2OS
  • Mol. W.232.30 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 34
Dapsone Impurity 34
  • CAT. No.D570037
  • CAS. No.36679-40-0
  • Mol. F.C12H12N2O4S
  • Mol. W.280.30 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 35
Dapsone Impurity 35
  • CAT. No.D570038
  • CAS. No.69391-11-3
  • Mol. F.C12H12N2O4S2
  • Mol. W.312.37 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 38
Dapsone Impurity 38
  • CAT. No.D570039
  • CAS. No.21387-93-9
  • Mol. F.C12H8N2O4S
  • Mol. W.276.27 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 39
Dapsone Impurity 39
  • CAT. No.D570040
  • CAS. No.53566-73-7
  • Mol. F.C12H8N2O4S
  • Mol. W.276.27 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 40
Dapsone Impurity 40
  • CAT. No.D570041
  • CAS. No.NA
  • Mol. F.C13H14N2O2S
  • Mol. W.262.33 g/mol
  • Stock Status:Limited Stock
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Dapsone Impurity 15
Dapsone Impurity 15
  • CAT. No.D570042
  • CAS. No.34262-32-3
  • Mol. F.C12H12N2O2S
  • Mol. W.248.30 g/mol
  • Stock Status:Instock
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Dapsone Azoxy Dimer
Dapsone Azoxy Dimer
  • CAT. No.D570043
  • CAS. No.35040-12-1
  • Mol. F.C24H20N4O5S2
  • Mol. W.508.57 g/mol
  • Stock Status:Custom Synthesis
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N-Formyl Dapsone
N-Formyl Dapsone
  • CAT. No.D570044
  • CAS. No.21501-24-6
  • Mol. F.C13H12N2O3S
  • Mol. W.276.30 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 2
Dapsone Impurity 2
  • CAT. No.D570045
  • CAS. No.26815-49-6
  • Mol. F.C12H11NO2S
  • Mol. W.233.29 g/mol
  • Stock Status:Custom Synthesis
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Dapsone Impurity 6
Dapsone Impurity 6
  • CAT. No.D570046
  • CAS. No.NA
  • Mol. F.C12H12N2O2S
  • Mol. W.248.30 g/mol
  • Stock Status:Instock
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Dapsone Impurity 7
Dapsone Impurity 7
  • CAT. No.D570047
  • CAS. No.NA
  • Mol. F.C13H14N2O2S
  • Mol. W.262.33 g/mol
  • Stock Status:Custom Synthesis
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Isotope Labelled Compounds

Dapsone-D8
Dapsone-D8
  • CAT. No.D570008
  • CAS. No.557794-38-4
  • Mol. F.C12H4D8N2O2S
  • Mol. W.256.35 g/mol
  • Stock Status:Under Synthesis
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N-Acetyl Dapsone D8
N-Acetyl Dapsone D8
  • CAT. No.D570024
  • CAS. No.1215635-13-4
  • Mol. F.C14H6D8N2O3S
  • Mol. W.298.39 g/mol
  • Stock Status:Custom Synthesis
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Dapsone-D4
Dapsone-D4
  • CAT. No.D570030
  • CAS. No.1346602-12-7
  • Mol. F.C12H8D4N2O2S
  • Mol. W.252.33 g/mol
  • Stock Status:Custom Synthesis
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Dapsone-13C12
Dapsone-13C12
  • CAT. No.D570032
  • CAS. No.1632119-29-9
  • Mol. F.13C12H12N2O2S
  • Mol. W.260.22 g/mol
  • Stock Status:Custom Synthesis
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N-Acetyl Dapsone D4
N-Acetyl Dapsone D4
  • CAT. No.D570035
  • CAS. No.2070015-08-4
  • Mol. F.C14H10D4N2O3S
  • Mol. W.294.40 g/mol
  • Stock Status:Custom Synthesis
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N-Acetyl dapsone-D4-1
N-Acetyl dapsone-D4-1
  • CAT. No.D570036
  • CAS. No.NA
  • Mol. F.C14H10D4N2O3S
  • Mol. W.294.40 g/mol
  • Stock Status:Instock
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