An isothiazole is a type of organic compound

Organic compound

An organic compound is any member of a large class of gaseous, liquid, or solid chemical compounds whose molecules contain carbon. For historical reasons discussed below, a few types of carbon-containing compounds such as carbides, carbonates, simple oxides of carbon, and cyanides, as well as the...

 containing a five-membered aromatic ring that consists of three carbon atoms, one nitrogen atom, and one sulfur atom. Isothiazole is a member of a class of compounds known as azole

Azole

An azole is a class of five-membered nitrogen heterocyclic ring compounds containing at least one other non-carbon atom of either nitrogen, sulfur, or oxygen. The parent compounds are aromatic and have two double bonds; there are successively reduced analogs with fewer...

s. In contrast to the isomer

Isomer

In chemistry, isomers are compounds with the same molecular formula but different structural formulas. Isomers do not necessarily share similar properties, unless they also have the same functional groups. There are many different classes of isomers, like stereoisomers, enantiomers, geometrical...

ic thiazole

Thiazole

Thiazole, or 1,3-thiazole, is a heterocyclic compound that contains both sulfur and nitrogen; the term 'thiazole' also refers to a large family of derivatives. Thiazole itself is a pale yellow liquid with a pyridine-like odor and the molecular formula C3H3NS...

, the two heteroatoms are in adjacent positions.

The ring structure of isothiazole is incorporated into larger compounds with biological activity such as the pharmaceutical drugs ziprasidone

Ziprasidone

Ziprasidone was the fifth atypical antipsychotic to gain FDA approval . In the United States, Ziprasidone is Food and Drug Administration approved for the treatment of schizophrenia, and the intramuscular injection form of ziprasidone is approved for acute agitation in schizophrenic patients...

 and perospirone

Perospirone

Perospirone is an atypical antipsychotic of the azapirone chemical class. It was introduced in Japan in 2001 by Dainippon Sumitomo Pharma for the treatment of schizophrenia and acute bipolar mania. Perospirone acts as a 5-HT1A receptor partial agonist, 5-HT2A receptor inverse agonist, and D2, D4,...

.