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 Differential thermal analysis (DTA) and thermogravimetric analysis (TGA) study of some organic acids. II, published in 1963, which mentions a compound: 560-09-8, Name is (1S,3R)-1,2,2-Trimethylcyclopentane-1,3-dicarboxylic acid, Molecular C10H16O4, Application In Synthesis of (1S,3R)-1,2,2-Trimethylcyclopentane-1,3-dicarboxylic acid.
cf. CA 59, 8105f. The DTA and TGA curves of 5-aminosalicylic, 5-nitrosalicylic, acetylsalicylic, 5-bromosalicylic, salicylhydroxamic, α,β-dibromosuccinic, m-cresoxyacetic, p-bromomandelic, d-camphoric, diphenic, picric, 2,4-dimethoxybenzoic, m-hydroxybenzoic, 3,4-dihydroxybenzoic (1.5H2O), 4-hydroxy-3-methoxybenzoic, and tropic acids were obtained from ambient to 350°. The DTA curves are useful for identifying the acids.
The article 《Differential thermal analysis (DTA) and thermogravimetric analysis (TGA) study of some organic acids. II》 also mentions many details about this compound(560-09-8)Application In Synthesis of (1S,3R)-1,2,2-Trimethylcyclopentane-1,3-dicarboxylic acid, you can pay attention to it, because details determine success or failure
Reference:
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com