Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Bulletin des Societes Chimiques Belges called The polymorphism of organic compounds, Author is Naveau, J., which mentions a compound: 560-09-8, SMILESS is CC1(C)[C@@H](CC[C@]1(C)C(O)=O)C(O)=O, Molecular C10H16O4, Name: (1S,3R)-1,2,2-Trimethylcyclopentane-1,3-dicarboxylic acid.
Observations were made of the polymorphic transformations of organic compounds on the stage of a polarizing microscope. The crystals were cooled to -165° and heated to 200°. Under normal pressure polymorphism could not be proved for several compounds Enantiotropic pseudotransition was exhibited by phenol at -2°, caused by impurities. 1-Methylcyclopentanol, phenol, cyclopentyl cyanide, Me3COH, and CHI3 showed no true polymorphism. MeCN was not enantiotropic. Glutaric acid, lauryl alc., chloral hydrate, Me2C(Et)OH, and succinonitrile were enantiotropic. Hydroquinone, malonitrile, and Me oxalate were dimorphic monotropes. d-Camphoric acid was a true monotrope. 55 references.
Compounds in my other articles are similar to this one((1S,3R)-1,2,2-Trimethylcyclopentane-1,3-dicarboxylic acid)Name: (1S,3R)-1,2,2-Trimethylcyclopentane-1,3-dicarboxylic acid, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com