Thiosalicylic acid

      Thiosalicylic acid
      Identifiers
      CAS number 147-93-3 YesY
      PubChem 5443
      ChemSpider 5248 YesY
      EC number 205-704-3
      KEGG D08586 N
      MeSH 2-Thiosalicylic+acid
      ChEBI CHEBI:59124 YesY
      ChEMBL CHEMBL119888 YesY
      RTECS number DH3325000
      Beilstein Reference 508507
      Gmelin Reference 3838
      Jmol-3D images Image 1
      Image 2
      Properties
      Molecular formula C7H6O2S
      Molar mass 154.19 g mol−1
      Appearance Leaf or needle shaped crystals
      Density 1.49 g cm-3[2]
      Melting point

      162-169 °C, 435-442 K, 324-336 °F

      log P 2.39
      Acidity (pKa) 3.501
      Hazards
      EU classification Irritant Xi
      R-phrases R36/37/38
      S-phrases S26
      Related compounds
      Related compounds Salicylic acid

      Thiophenol

       N (verify) (what is: YesY/N?)
      Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
      Infobox references

      Thiosalicylic acid is an organosulfur compound containing carboxyl and sulfhydryl functional groups. Its molecular formula is C6H4(SH)(CO2H). it is a yellow solid that is slightly soluble in water, ethanol and diethyl ether, and alkanes, but more soluble in DMSO.[3]

      Preparation and uses

      Thiosalicylic acid is prepared from 2-aminobenzoic acid via diazotization.[4]

      Thiosalicylic acid is a precursor to the dyestuff thioindigo. Thiosalicylic acid is also used to make the vaccine preservative thiomersal.

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      Other aspects

      It is a precursor to drug candidates for treatment of atherosclerosis and melanoma.[5][6]

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      References

      1. ^ http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5443&loc=ec_rcs
      2. ^ "A13401 Thiosalicylic acid, 98%". Alfa Aesar. Retrieved 2010-08-10. 
      3. ^ Lide, David R. (2009). Handbook of Chemistry and Physics (90 ed.). Boca Raton, Florida: CRC Press. p. 3-324. ISBN 978-1-4200-9084-0. 
      4. ^ C. F. H. Allen and D. D. MacKay (1943), "Thiosalicylic acid", Org. Synth. ; Coll. Vol. 2: 580 
      5. ^ Smalley, Keiran S.M; Tim G. Eisen (1). "Farnesyl thiosalicylic acid inhibits the growth of melanoma cells through a combination of cytostatic and pro-apoptotic effects". International Journal of Cancer 98 (4): 514–522. doi:10.1002/ijc.10213. 
      6. ^ George, Jacob; Arnon Afek; Pnina Keren; Itzhak Herz; Iris Goldberg; Roni Haklai; Yoel Kloog; Gad Keren (2002). "Functional Inhibition of Ras by S-trans,trans-Farnesyl Thiosalicylic Acid Attenuates Atherosclerosis in Apolipoprotein E Knockout Mice". Circulation 105: 2416–2422. doi:10.1161/01.CIR.0000016065.90068.96. 


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      Last modified on 8 March 2013, at 15:11