Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 174775-48-5, Name is Ethyl 5-aminobenzofuran-2-carboxylate, molecular formula is C11H11NO3. In an article, author is Jang, Hyo Jung,once mentioned of 174775-48-5, Category: benzofurans.
Colorimetric Detection of Co2+, Cu2+, and Zn2+ by a Multifunctional Chemosensor in Aqueous Solution
A novel multifunctional colorimetric sensor HMBC ((E)-3-((2-hydroxy-3-methoxybenzylidene)amino)benzofuran-2-carboxamide), based on 3-aminobenzofuran-2-carboxamide and 2-hydroxyl-3-methoxylbenzaldehyde, was designed and synthesized. The chemosensor HMBC could sense Co2+, Cu2+, and Zn2+ by color changes from colorless to yellow. Limits of detection (0.38, 0.41, and 1.02 mu M) of HMBC for Co2+, Cu2+, and Zn2+ were much lower than the New Jersey Department of Environmental Protection (NJDEP) standard (1.70 mu M) for Co2+ and the WHO guidelines (31.5 mu M and 76 mu M) for Cu2+ and Zn2+. Significantly, HMBC could be applied for the quantification of Co2+, Cu2+, and Zn2+ in real samples. The sensing process of HMBC for Co2+, Cu2+, and Zn2+ was well demonstrated by H-1 NMR and UV-Visible titrations, Job plots, theoretical calculations, and ESI-mass spectroscopy.
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Reference:
Benzofuran – Wikipedia,
,Benzofuran | C8H6O – PubChem