In an article, published in an article, once mentioned the application of 121-66-4, Name is 5-Nitrothiazol-2-amine,molecular formula is C3H3N3O2S, is a conventional compound. this article was the specific content is as follows.SDS of cas: 121-66-4
3,6-Disubstituted carbazole chromophores containing thiazole and benzothiazole units: Synthesis, characterization and first-order hyperpolarizabilities
3,6-Disubstituted carbazole chromophores containing thiazole and benzothiazole units were synthesized and characterized by NMR, IR, and UV. The first-order hyperpolarizabilities (beta) were calculated via solvatochromic method. Our experiments suggest that the incorporation of thiazole and benzothiazole into carbazole-based chromophores can allow for significant enhancement of molecular hyperpolarizabilities. Nonlinear optical properties of ApiDpiA carbazole chromophores are superior to those of the corresponding DpiA aryl compounds.
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Reference：
Thiazole | C3H9550NS – PubChem,
Thiazole | chemical compound | Britannica