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 Seizures and selective CA-1 hippocampal lesions induced by an excitotoxic cyanide metabolite, 2-iminothiazolidine-4-carboxylic acid, published in 1995, which mentions a compound: 2150-55-2, Name is 2-Amino-4,5-dihydrothiazole-4-carboxylic acid, Molecular C4H6N2O2S, HPLC of Formula: 2150-55-2.
Excitatory amino acid (EAA)-like and excitotoxic properties of the secondary metabolite of cyanide, 2-iminothiazolidine-4-carboxylic acid (2-ICA), were evaluated because of its possible role in cyanide-induced neurotoxicity. Intracerebroventricular (i.c.v.) injections of 2-ICA in mice produced wild-running seizures that were qual. and quant. similar to seizures observed with glutamate. 2-ICA, kainate, and proline seizures were prevented by both the NMDA and non-NMDA antagonists, MK-801 and CNQX, resp. In contrast, NMDA-induced seizures were prevented by MK-801, but not CNQX. When infused i.c.v. in rats over a 7-day period, 2-ICA produced extensive and selective loss of CA-1 pyramidal neurons of the hippocampus. In hippocampal slices preloaded with D-[3H]aspartate, 2-ICA superfusion did not evoke release nor significantly augment potassium-stimulated release of the radiolabeled transmitter. These findings indicate 2-ICA has excitotoxic properties and its role in cyanide neurotoxicity deserves further study.
In addition to the literature in the link below, there is a lot of literature about this compound(2-Amino-4,5-dihydrothiazole-4-carboxylic acid)HPLC of Formula: 2150-55-2, illustrating the importance and wide applicability of this compound(2150-55-2).