Isothiazole
Isothiazole, or 1,2-thiazole, is an organic compound consisting with the formula . The ring is unsaturated and features an S-N bond. The isomeric thiazole, where the S and N are not directly bonded are far more common. Isothiazones are produced by oxidation of enamine-thiones. The ring structure of isothiazole is incorporated into larger compounds with biological activity such as the pharmaceutical drugs ziprasidone and perospirone. See also 
 Isothiazolinone

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