Neosalvarsan

Neosalvarsan
Names
	Other names Sodium 3,3'-diamino-4,4'-dihydroxyarsenobenzene-N-formaldehydesulfoxylate; Neoarsphenamine;914
Identifiers
CAS Number	457-60-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	9586 ;
ECHA InfoCard	100.006.613
PubChem CID	9980;
UNII	O7K7R0O4BG ;
	InChI InChI=1S/C13H14As2N2O4S.Na/c16-10-5-8(1-3-12(10)18)14-15-9-2-4-13(19)11(6-9)17-7-22(20)21;/h1-6,17-19H,7,16H2,(H,20,21);/q;+1/p-1 Key: BGYSJUFVJUJSOL-UHFFFAOYSA-M ; InChI=1/C13H14As2N2O4S.Na/c16-10-5-8(1-3-12(10)18)14-15-9-2-4-13(19)11(6-9)17-7-22(20)21;/h1-6,17-19H,7,16H2,(H,20,21);/q;+1/p-1 Key: BGYSJUFVJUJSOL-REWHXWOFAO;
	SMILES [Na+].[O-]S(=O)CNc2cc(/[As]=[As]/c1ccc(O)c(N)c1)ccc2O;
Properties
Chemical formula	C13H13As2N2NaO4S
Molar mass	466.15 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Neosalvarsan is a synthetic chemotherapeutic that is an organoarsenic compound. It became available in 1912 and superseded the more toxic and less water-soluble salvarsan as an effective treatment for syphilis. Because both of these arsenicals carried considerable risk of side effects, they were replaced for this indication by penicillin in the 1940s.

Both salvarsan and neosalvarsan were developed in the laboratory of Paul Ehrlich in Frankfurt, Germany. Their discoveries were the result of the first organized team effort to optimize the biological activity of a lead compound through systematic chemical modifications.^[1] This scheme is the basis for most modern pharmaceutical research. Both salvarsan and neosalvarsan are prodrugs — that is, they are metabolised into the active drug in the body.

References

↑ Strebhardt K, Ullrich A (May 2008). "Paul Ehrlich's magic bullet concept: 100 years of progress". Nat. Rev. Cancer. 8 (6): 473–80. doi:10.1038/nrc2394. PMID 18469827.

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[1] Strebhardt K, Ullrich A (May 2008). "Paul Ehrlich's magic bullet concept: 100 years of progress". Nat. Rev. Cancer. 8 (6): 473–80. doi:10.1038/nrc2394. PMID 18469827.