Synthesis of 2-aminothiazole derivatives was written by Choudhari, S. R.;Goswami, D. D.;Thakar, K. A.. And the article was included in Journal of the Indian Chemical Society in 1978.SDS of cas: 33166-79-9 This article mentions the following:
Fourteen I [R = 4,2-Cl(HO)C6H3 3,4-Cl2C6H3, 2,5-BrMeC6H3, etc.; R1 = H] were prepared by cyclocondensation of acetophenones, 2-haloacetophenones, and benzoylacetate esters with thiourea. Six I (R1 = p-H2NC6H4SO2) were prepared from the resp. I (R1 = H). The hypo- and hyperglycemic activity of nine I were tabulated. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9SDS of cas: 33166-79-9).
Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.SDS of cas: 33166-79-9
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics