Rhodanine

Rhodanine[1]
Names
	IUPAC name 2-Sulfanylidene-1,3-thiazolidin-4-one
	Other names 2-Thioxo-4-thiazolidinone; 4-Oxo-2-thioxothiazoline
Identifiers
CAS Number	141-84-4 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL224633 ;
ChemSpider	1013337 ;
ECHA InfoCard	100.005.005
PubChem CID	1201546;
UNII	7O50LKL2G8 ;
CompTox Dashboard (EPA)	DTXSID4026002 ;
	InChI InChI=1S/C3H3NOS2/c5-2-1-7-3(6)4-2/h1H2,(H,4,5,6) Key: KIWUVOGUEXMXSV-UHFFFAOYSA-N ; InChI=1/C3H3NOS2/c5-2-1-7-3(6)4-2/h1H2,(H,4,5,6) Key: KIWUVOGUEXMXSV-UHFFFAOYAP;
	SMILES O=C1NC(=S)SC1;
Properties
Chemical formula	C3H3NOS2
Molar mass	133.18 g·mol−1
Density	0.868 g/cm−3[2]
Melting point	170 °C (338 °F; 443 K)[2]
Solubility in water	Soluble[2]
Solubility	Ethanol, dimethyl sulfoxide[2]
Hazards
EU classification (DSD) (outdated)	Xn
R-phrases (outdated)	R22 R41
S-phrases (outdated)	S22 S26 S39
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	verify (what is ?)
	Infobox references

Rhodanine is a 5-membered heterocyclic organic compound possessing a thiazolidine core. It was discovered in 1877 by Marceli Nencki who named it "Rhodaninsaure" in reference to its synthesis from ammonium rhodanide (known as ammonium thiocyanate to modern chemists) and chloroacetic acid in water.[3]

Rhodanines can also be prepared by the reaction of carbon disulfide, ammonia, and chloroacetic acid, which proceeds via an intermediate dithiocarbamate.[4]

Derivatives

Some rhodanine derivatives have pharmacological properties; for instance, epalrestat is used to treat diabetic neuropathy. However, most are promiscuous binders with poor selectivity; as a result, this class of compounds is viewed with suspicion by medicinal chemists.[5][6][7] However, this view is discussed (both correct use of PAINS filters and necessity of the experimental confirmations of such properties) as well as many useful features of rhodanine derivatives.[8][9]

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References

Rhodanine at Sigma-Aldrich
Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. p. 3.512. ISBN 978-1439855119.
Nencki, M. (10 July 1877). "Ueber die Einwirkung der Monochloressigsäure auf Sulfocyansäure und ihre Salze". Journal für Praktische Chemie. 16 (1): 1–17. doi:10.1002/prac.18770160101.
Redemann, C. Ernst; Icke, Roland N.; Alles, Gordon A. (1955). "Rhodanine". Organic Syntheses.; Collective Volume, 3, p. 763
Baell, J. B; Holloway, G. A (2010). "New substructure filters for removal of pan assay interference compounds (PAINS) from screening libraries and for their exclusion in bioassays". J. Med. Chem. 53 (7): 2719–2740. CiteSeerX 10.1.1.394.9155. doi:10.1021/jm901137j. PMID 20131845.
Tomašić, Tihomir; Peterlin Mašič, Lucija (2012). "Rhodanine as a scaffold in drug discovery: A critical review of its biological activities and mechanisms of target modulation". Expert Opinion on Drug Discovery. 7 (7): 549–60. doi:10.1517/17460441.2012.688743. PMID 22607309.
Pouliot, Martin; Jeanmart, Stephane (8 September 2015). "Pan Assay Interference Compounds (PAINS) and Other Promiscuous Compounds in Antifungal Research". Journal of Medicinal Chemistry. 59 (2): 497–503. doi:10.1021/acs.jmedchem.5b00361. PMID 26313340.
Kaminskyy, D; Kryshchyshyn, A; Lesyk, R (2017). "Recent developments with rhodanine as a scaffold for drug discovery". Expert Opinion on Drug Discovery. 12 (12): 1233–1252. doi:10.1080/17460441.2017.1388370. PMID 29019278.
Kaminskyy, D; Kryshchyshyn, A; Lesyk, R (2017). "5-Ene-4-thiazolidinoneseAn efficient tool in medicinal chemistry". Eur. J. Med. Chem. 140 (10): 542–594. doi:10.1016/j.ejmech.2017.09.031. PMC 7111298. PMID 28987611.

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[1] Rhodanine at Sigma-Aldrich

[b1-2] Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. p. 3.512. ISBN 978-1439855119.

[3] Nencki, M. (10 July 1877). "Ueber die Einwirkung der Monochloressigsäure auf Sulfocyansäure und ihre Salze". Journal für Praktische Chemie. 16 (1): 1–17. doi:10.1002/prac.18770160101.

[4] Redemann, C. Ernst; Icke, Roland N.; Alles, Gordon A. (1955). "Rhodanine". Organic Syntheses.; Collective Volume, 3, p. 763

[5] Baell, J. B; Holloway, G. A (2010). "New substructure filters for removal of pan assay interference compounds (PAINS) from screening libraries and for their exclusion in bioassays". J. Med. Chem. 53 (7): 2719–2740. CiteSeerX 10.1.1.394.9155. doi:10.1021/jm901137j. PMID 20131845.

[6] Tomašić, Tihomir; Peterlin Mašič, Lucija (2012). "Rhodanine as a scaffold in drug discovery: A critical review of its biological activities and mechanisms of target modulation". Expert Opinion on Drug Discovery. 7 (7): 549–60. doi:10.1517/17460441.2012.688743. PMID 22607309.

[7] Pouliot, Martin; Jeanmart, Stephane (8 September 2015). "Pan Assay Interference Compounds (PAINS) and Other Promiscuous Compounds in Antifungal Research". Journal of Medicinal Chemistry. 59 (2): 497–503. doi:10.1021/acs.jmedchem.5b00361. PMID 26313340.

[8] Kaminskyy, D; Kryshchyshyn, A; Lesyk, R (2017). "Recent developments with rhodanine as a scaffold for drug discovery". Expert Opinion on Drug Discovery. 12 (12): 1233–1252. doi:10.1080/17460441.2017.1388370. PMID 29019278.

[9] Kaminskyy, D; Kryshchyshyn, A; Lesyk, R (2017). "5-Ene-4-thiazolidinoneseAn efficient tool in medicinal chemistry". Eur. J. Med. Chem. 140 (10): 542–594. doi:10.1016/j.ejmech.2017.09.031. PMC 7111298. PMID 28987611.