In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Solubility and solid phases in the sulfuric acid-sodium sulfate-aluminum sulfate-water system at 50°, published in 1987-02-28, which mentions a compound: 17927-65-0, Name is Aluminum(III) sulfate xhydrate, Molecular Al2H8O13S3, Name: Aluminum(III) sulfate xhydrate.
Solubility and composition of the solid phases in the H2SO4-Na2SO4-Al2(SO4)3-H2O system were determined for H2SO4 concentrations of 3-12 weight%. Under the given conditions Na2SO4, NaAl(SO4)2.12H2O and Al2(SO4)3.17H2O crystallize.
From this literature《Solubility and solid phases in the sulfuric acid-sodium sulfate-aluminum sulfate-water system at 50°》,we know some information about this compound(17927-65-0)Name: Aluminum(III) sulfate xhydrate, but this is not all information, there are many literatures related to this compound(17927-65-0).
Reference:
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com