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Chemistry

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Also known as: 80-08-0, 4,4'-sulfonyldianiline, Diaphenylsulfone, 4,4'-diaminodiphenyl sulfone, Dapson, 4-aminophenyl sulfone
Molecular Formula
C12H12N2O2S
Molecular Weight
248.30  g/mol
InChI Key
MQJKPEGWNLWLTK-UHFFFAOYSA-N
FDA UNII
8W5C518302

Dapsone
A sulfone active against a wide range of bacteria but mainly employed for its actions against MYCOBACTERIUM LEPRAE. Its mechanism of action is probably similar to that of the SULFONAMIDES which involves inhibition of folic acid synthesis in susceptible organisms. It is also used with PYRIMETHAMINE in the treatment of malaria. (From Martindale, The Extra Pharmacopoeia, 30th ed, p157-8)
Dapsone is a Sulfone.
1 2D Structure

Dapsone

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
4-(4-aminophenyl)sulfonylaniline
2.1.2 InChI
InChI=1S/C12H12N2O2S/c13-9-1-5-11(6-2-9)17(15,16)12-7-3-10(14)4-8-12/h1-8H,13-14H2
2.1.3 InChI Key
MQJKPEGWNLWLTK-UHFFFAOYSA-N
2.1.4 Canonical SMILES
C1=CC(=CC=C1N)S(=O)(=O)C2=CC=C(C=C2)N
2.2 Other Identifiers
2.2.1 UNII
8W5C518302
2.3 Synonyms
2.3.1 MeSH Synonyms

1. 4,4' Diaminophenyl Sulfone

2. 4,4'-diaminophenyl Sulfone

3. Avlosulfone

4. Dadps

5. Dapsoderm-x

6. Dapson-fatol

7. Diaminodiphenylsulfone

8. Diaphenylsulfone

9. Disulone

10. Sulfona

11. Sulfone, 4,4'-diaminophenyl

12. Sulfonyldianiline

2.3.2 Depositor-Supplied Synonyms

1. 80-08-0

2. 4,4'-sulfonyldianiline

3. Diaphenylsulfone

4. 4,4'-diaminodiphenyl Sulfone

5. Dapson

6. 4-aminophenyl Sulfone

7. 4,4'-diaminodiphenylsulfone

8. Diaphenylsulfon

9. Novophone

10. Sulfona

11. Dadps

12. Bis(4-aminophenyl) Sulfone

13. Avlosulfone

14. Diphenasone

15. Sulfadione

16. Sulphadione

17. Dapsonum

18. Disulone

19. Aczone

20. Udolac

21. P-aminophenyl Sulfone

22. Avlosulfon

23. Croysulfone

24. Dumitone

25. Diphone

26. Eporal

27. Diaphenylsulphon

28. Diaphenylsulphone

29. Metabolite C

30. Sulfonyldianiline

31. Sumicure S

32. Bis(p-aminophenyl) Sulfone

33. Sulphonyldianiline

34. P,p-sulphonylbisbenzamine

35. Sulfona-mae

36. Avlosulphone

37. Croysulphone

38. Dubronax

39. 4,4'-dapsone

40. Diaminodiphenyl Sulfone

41. Tarimyl

42. P,p-sulphonylbisbenzenamine

43. Sulfone Ucb

44. 4,4'-sulfonylbisaniline

45. P,p'-diaminodiphenyl Sulfone

46. 4-(4-aminophenyl)sulfonylaniline

47. Dapsona

48. Nsc-6091

49. Benzenamine, 4,4'-sulfonylbis-

50. Diaminodiphenylsulfone

51. Bis(4-aminophenyl)sulfone

52. Di(p-aminophenyl) Sulfone

53. P,p-sulphonyldianiline

54. 4,4'-sulfonylbisbenzamine

55. Di(4-aminophenyl) Sulfone

56. P,p'-sulfonyldianiline

57. 4,4'-sulfonylbisbenzenamine

58. P,p-sulfonylbisbenzamine

59. Diaminodifenilsulfona

60. Dds, Pharmaceutical

61. Di(p-aminophenyl)sulphone

62. P,p-sulfonylbisbenzenamine

63. Araldite Ht 976

64. Bis(p-aminophenyl)sulphone

65. Di(4-aminophenyl)sulphone

66. Bis(4-aminophenyl)sulphone

67. P,p-diaminodiphenyl Sulphone

68. N,n'-diphenyl Sulfondiamide

69. 1,1'-sulfonylbis(4-aminobenzene)

70. 4,4'-sulphonyldianiline

71. Dds

72. Servidapson

73. 4,4'-sulphonylbisbenzamine

74. 4,4'-sulphonylbisbenzenamine

75. 4,4'-diaminodiphenyl Sulphone

76. Wr 448

77. 4,4-diaminodifenylsulfon

78. Diamino-4,4'-diphenyl Sulfone

79. Diamino-4,4'-diphenyl Sulphone

80. Nsc 6091d

81. Nci-c01718

82. 1,1'-sulfonylbis[4-aminobenzene]

83. 1,1'-sulphonylbis(4-aminobenzene)

84. Aniline, 4,4'-sulfonyldi-

85. Ht 976

86. 4,4'-diamino Diphenyl Sulphone

87. F 1358

88. 4,4'-sulfonyldianiline (dapsone)

89. 1358f

90. 4-[(4-aminobenzene)sulfonyl]aniline

91. 4,4'-sulfonylbisbenzeneamine

92. 4,4'-sulfonyldianilin

93. Diaphenylsulfone (jan)

94. Chembl1043

95. Mls000069409

96. Chebi:4325

97. Dtxsid4020371

98. Nsc-6091d

99. Sulfanona-mae

100. J04ba02

101. Nsc6091

102. Sulfon-mere

103. 4,4'-dds

104. Di(4-aminophenyl)sulfone

105. 4-(4-amino-benzenesulfonyl)-phenylamine

106. Ncgc00016322-08

107. Smr000059064

108. Hardener Ht 976

109. Dds (pharmaceutical)

110. Sulphon-mere

111. Dsstox_cid_371

112. 8w5c518302

113. Dapsonum [inn-latin]

114. Dapsona [inn-spanish]

115. Dsstox_rid_75547

116. Dsstox_gsid_20371

117. Dss (van)

118. Diaphenylsulfone [jan]

119. 4-aminophenylsulfone

120. 4 4-diamino Diphenyl Sulfone 99.5%min Cas:80-08-8

121. Dds, Diaphenylsulfone

122. 4,4'-diaminodiphenyl Suphone

123. Atrisone

124. Diaminodifenilsulfona [spanish]

125. 4,4-diaminodifenylsulfon [czech]

126. Cas-80-08-0

127. Hy 976

128. Ccris 192

129. Dapsone (usp)

130. Aczone (tn)

131. 1632119-29-9

132. Hsdb 5073

133. Sr-01000002976

134. Nsc 6091

135. 4-[(4-aminophenyl)sulfonyl]aniline

136. Sulfone, Diphenyl, 4,4'-diamino-

137. Einecs 201-248-4

138. (4-sulfanilylphenyl)amine

139. Mfcd00007887

140. Azt + Dapsone Cominbation

141. Brn 0788055

142. Ai3-08087

143. Diaphenyl Sulfone

144. Dapsone [usan:usp:inn:ban]

145. Unii-8w5c518302

146. Dapsone,(s)

147. Prestwick_152

148. Albb-005917

149. Dapsone-d8(major)

150. Dapsone-[d4]

151. In-201

152. Dapsone-13c12

153. Bis Sulfone

154. 4,4''-dapsone

155. 4-[(4-aminophenyl)sulfonyl]phenylamine

156. Dapsone-[15n2]

157. Spectrum_000888

158. Dapsone [vandf]

159. Aniline,4'-sulfonyldi-

160. Dapsone [hsdb]

161. Dapsone [iarc]

162. Dapsone [usan]

163. Dapsone [inn]

164. Dapsone [mi]

165. Dapsone [mart.]

166. Opera_id_1950

167. Prestwick0_000035

168. Prestwick1_000035

169. Prestwick2_000035

170. Prestwick3_000035

171. Spectrum2_001133

172. Spectrum3_000375

173. Spectrum4_000310

174. Spectrum5_000825

175. Wln: Zr Dswr Dz

176. 4,4''-sulfonyldianiline

177. Dapsone [usp-rs]

178. Dapsone [who-dd]

179. Dapsone [who-ip]

180. 4,4''-sulfonylbisaniline

181. Ec 201-248-4

182. 4,4'-sulfonyldiphenylamine

183. Benzenamine,4'-sulfonylbis-

184. Oprea1_143052

185. Schembl21428

186. Bspbio_000129

187. Bspbio_002129

188. Cbdive_013582

189. Dianiline, 4,4'-sulfonyl-

190. Kbiogr_000900

191. Kbioss_001368

192. Mls001055349

193. Mls001076146

194. 4,4''-sulfonylbisbenzenamine

195. 4,4'-sulfonylbis[benzamine]

196. 4-aminophenyl Sulfone, 97%

197. Bidd:gt0770

198. Dapsone [ep Impurity]

199. Dapsone [orange Book]

200. Divk1c_000573

201. P,p''-diaminodiphenyl Sulfone

202. Spectrum1500222

203. Spbio_001025

204. Spbio_002050

205. Dapsone [ep Monograph]

206. 4,4''-diaminodiphenyl Sulfone

207. 4,4'-diamino Diphenyl Sulfone

208. Bpbio1_000143

209. Zinc6310

210. Dapsone [usp Monograph]

211. Dapsonum [who-ip Latin]

212. Gtpl10934

213. Hms501m15

214. Kbio1_000573

215. Kbio2_001368

216. Kbio2_003936

217. Kbio2_006504

218. Kbio3_001349

219. 4-(4-aminophenylsulfonyl)aniline

220. Ninds_000573

221. Hms1568g11

222. Hms1920c14

223. Hms2091k04

224. Hms2095g11

225. Hms2231g09

226. Hms3259c13

227. Hms3369b11

228. Hms3712g11

229. Pharmakon1600-01500222

230. Dapson 100 Microg/ml In Methanol

231. Act07431

232. Amy40781

233. Hy-b0688

234. 1,1''-sulfonylbis(4-aminobenzene)

235. Tox21_110371

236. Tox21_201347

237. Tox21_300558

238. 4-(4-aminophenylsulfonyl)benzenamine

239. Bbl002412

240. Bdbm50029764

241. Ccg-40260

242. Nsc756716

243. S4612

244. Stk387118

245. Akos000119322

246. Tox21_110371_1

247. Db00250

248. Ht 9664

249. Ks-1450

250. Nc00488

251. Nsc-756716

252. Idi1_000573

253. Ncgc00016322-01

254. Ncgc00016322-02

255. Ncgc00016322-03

256. Ncgc00016322-04

257. Ncgc00016322-05

258. Ncgc00016322-06

259. Ncgc00016322-07

260. Ncgc00016322-09

261. Ncgc00016322-10

262. Ncgc00016322-13

263. Ncgc00023946-03

264. Ncgc00023946-04

265. Ncgc00023946-05

266. Ncgc00023946-06

267. Ncgc00254533-01

268. Ncgc00258899-01

269. Ac-10922

270. 4-[(4-aminophenyl)sulfonyl]phenylamine #

271. Sbi-0051331.p003

272. Db-056406

273. Ab00051962

274. D0089

275. Dapsone, Vetranal(tm), Analytical Standard

276. Ft-0624447

277. Ft-0665473

278. 4 Inverted Exclamation Marka-sulfonyldianiline

279. C07666

280. D00592

281. Ab00051962_19

282. A839828

283. Q422226

284. 4 Inverted Exclamation Marka-diaminodiphenyl Sulfone

285. 4,4 Inverted Exclamation Mark(r)-sulfonyldianiline

286. Q-200435

287. Sr-01000002976-2

288. Sr-01000002976-4

289. Brd-k62363391-001-05-8

290. Brd-k62363391-001-15-7

291. Sulfacetamide Sodium Impurity D [ep Impurity]

292. Dapsone, British Pharmacopoeia (bp) Reference Standard

293. Dapsone, European Pharmacopoeia (ep) Reference Standard

294. F0266-3067

295. 2-(piperazin-1-yl)-aceticacidn-(2-phenylethyl)-amide

296. 4-(4-aminophenyl)sulfonylaniline;4,4'-diaminodiphenyl Sulfone

297. Dapsone, United States Pharmacopeia (usp) Reference Standard

298. Dapsone, Pharmaceutical Secondary Standard; Certified Reference Material

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 248.30 g/mol
Molecular Formula C12H12N2O2S
XLogP31
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count4
Rotatable Bond Count2
Exact Mass248.06194880 g/mol
Monoisotopic Mass248.06194880 g/mol
Topological Polar Surface Area94.6 Ų
Heavy Atom Count17
Formal Charge0
Complexity306
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 4  
Drug NameAczone
PubMed HealthDapsone
Drug ClassesAntiacne, Leprostatic
Drug LabelACZONE Gel, 5%, contains dapsone, a sulfone, in an aqueous gel base for topical dermatologic use. ACZONE Gel, 5% is a gritty translucent material with visible drug substance particles. Chemically, dapsone has an empirical formula of C12H12N2O2S....
Active IngredientDapsone
Dosage FormGel
RouteTopical
Strength5%
Market StatusPrescription
CompanyAllergan

2 of 4  
Drug NameDapsone
PubMed HealthDapsone
Drug ClassesAntiacne, Leprostatic
Drug LabelDapsone-USP, 4,4'-diaminodiphenylsulfone (DDS), is a primary treatment for Dermatitis herpetiformis. It is an antibacterial drug for susceptible cases of leprosy. It is a white, odorless crystalline powder, practically in-soluble in water and insolub
Active IngredientDapsone
Dosage FormTablet
RouteOral
Strength100mg; 25mg
Market StatusPrescription
CompanyJacobus

3 of 4  
Drug NameDapsone
PubMed HealthDapsone
Drug ClassesAntiacne, Leprostatic
Drug LabelDapsone-USP, 4,4'-diaminodiphenylsulfone (DDS), is a primary treatment for Dermatitis herpetiformis. It is an antibacterial drug for susceptible cases of leprosy. It is a white, odorless crystalline powder, practically in-soluble in water and insolub
Active IngredientDapsone
Dosage FormTablet
RouteOral
Strength100mg; 25mg
Market StatusPrescription
CompanyJacobus

4 of 4  
Drug NameAczone
PubMed HealthDapsone
Drug ClassesAntiacne, Leprostatic
Drug LabelACZONE Gel, 5%, contains dapsone, a sulfone, in an aqueous gel base for topical dermatologic use. ACZONE Gel, 5% is a gritty translucent material with visible drug substance particles. Chemically, dapsone has an empirical formula of C12H12N2O2S....
Active IngredientDapsone
Dosage FormGel
RouteTopical
Strength5%
Market StatusPrescription
CompanyAllergan

4.2 Therapeutic Uses

Anti-Infective Agents; Antimalarials; Folic Acid Antagonists; Leprostatic Agents

National Library of Medicine's Medical Subject Headings. Dapsone. Online file (MeSH, 2016). Available from, as of August 12, 2016: https://www.nlm.nih.gov/mesh/2016/mesh_browser/MBrowser.html


/CLINICAL TRIALS/ ClinicalTrials.gov is a registry and results database of publicly and privately supported clinical studies of human participants conducted around the world. The Web site is maintained by the National Library of Medicine (NLM) and the National Institutes of Health (NIH). Each ClinicalTrials.gov record presents summary information about a study protocol and includes the following: Disease or condition; Intervention (for example, the medical product, behavior, or procedure being studied); Title, description, and design of the study; Requirements for participation (eligibility criteria); Locations where the study is being conducted; Contact information for the study locations; and Links to relevant information on other health Web sites, such as NLM's MedlinePlus for patient health information and PubMed for citations and abstracts for scholarly articles in the field of medicine. Dapsone is included in the database.

NIH/NLM; ClinicalTrials.Gov. Available from, as of March 17, 2016: https://clinicaltrials.gov/ct2/results?term=dapsone&Search=Search


Dapsone is administered as an oral agent. Dapsone is combined with chlorproguanil for the treatment of malaria. Dapsone is also used for P. jiroveci infection and prophylaxis, and for the prophylaxis for T. gondii ... The anti-inflammatory effects are the basis for therapy for pemphigoid, dermatitis herpetiformis, linear IgA bullous disease, relapsing chondritis, and ulcers caused by the brown recluse spider.

Brunton, L. Chabner, B, Knollman, B. Goodman and Gillman's The Pharmaceutical Basis of Therapeutics, Twelth Edition, McGraw Hill Medical, New York, NY. 2011, p. 1574


Dapsone is approved for use in dermatitis herpetiformis and leprosy. It is particularly useful in the treatment of linear immunoglobulin (IgA) dermatosis, bullous systemic lupus erythematosus, erythema elevatum diutinum, and subcorneal pustular dermatosis.

Brunton, L. Chabner, B, Knollman, B. Goodman and Gillman's The Pharmaceutical Basis of Therapeutics, Twelth Edition, McGraw Hill Medical, New York, NY. 2011, p. 1823


For more Therapeutic Uses (Complete) data for DAPSONE (14 total), please visit the HSDB record page.


4.3 Drug Warning

Peripheral neuropathy with motor loss has been reported rarely in patients receiving high dosage of dapsone (200-500 mg daily). ... Insomnia, headache, nervousness, vertigo, and psychosis have also been reported with dapsone.

American Society of Health-System Pharmacists 2016; Drug Information 2016. Bethesda, MD. 2016, p. 601


Resistance to dapsone in P. falciparum, P. jiroveci, and M. leprae results primarily from mutations in genes encoding dihydropteroate synthase.

Brunton, L. Chabner, B, Knollman, B. Goodman and Gillman's The Pharmaceutical Basis of Therapeutics, Twelth Edition, McGraw Hill Medical, New York, NY. 2011, p. 1564


Hemolysis develops in almost every individual treated with 200-300 mg of dapsone per day. ... Methemoglobinemia is also common. A genetic deficiency in the NADH-dependent methemoglobin reductase can result in severe methemoglobinemia after administration of dapsone. Isolated instances of headache, nervousness, insomnia, blurred vision, paresthesias, reversible peripheral neuropathy (thought to be sue to axonal degeneration), drug fever, hematuria, pruritus, and a variety of skin rashes have been reported. An infectious mononucleosis-like syndrome, which may be fatal, occurs occasionally.

Brunton, L. Chabner, B, Knollman, B. Goodman and Gillman's The Pharmaceutical Basis of Therapeutics, Twelth Edition, McGraw Hill Medical, New York, NY. 2011, p. 1564


Glucose-6-phosphate dehydrogenase (G6PD) protects red cells against oxidative damage. However, G6PD deficiency is encountered in nearly half a billion people worldwide, the most common of 100 variants being G6PD-A-. Dapsone, an oxidant, causes severe hemolysis in patients with G6PD deficiency. Thus, G6PD deficiency testing should be performed prior to use of dapsone wherever possible.

Brunton, L. Chabner, B, Knollman, B. Goodman and Gillman's The Pharmaceutical Basis of Therapeutics, Twelth Edition, McGraw Hill Medical, New York, NY. 2011, p. 1564


For