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 Design of removal agents for prevention of lithium intoxications. Chelating tendencies of model β-diketones, published in 1975, which mentions a compound: 18362-64-6, Name is 2,6-Dimethyl-3,5-heptanedione, Molecular C9H16O2, HPLC of Formula: 18362-64-6.
Formation constants for (Me2CRCO)2CH2 (R = Me, H) with Li+, Na+, K+, Rb+, Cs+ were determined to define the specificity for Li. While (Me3CCO)2CH2 can be used to sep. Li from the other ions, (Me2CHCO)2CH2 is even better and can, to a lesser extent, be used to sep. Na+ from K+, Rb+, and Cs+.
Compounds in my other articles are similar to this one(2,6-Dimethyl-3,5-heptanedione)HPLC of Formula: 18362-64-6, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica