Formation and cytotoxicity of halophenylacetamides: New group of nitrogenous aromatic halogenated disinfection byproducts in drinking water was written by Hu, Shaoyang;Kaw, Han Yeong;Zhu, Lizhong;Wang, Wei. And the article was included in Environmental Science & Technology in 2022.Recommanded Product: 2-(2-Chlorophenyl)acetamide This article mentions the following:
Nitrogenous aromatic halogenated disinfection byproducts (DBPs) in drinking water have received considerable attention recently owing to their relatively high toxicity. In this study, a new group of nitrogenous aromatic halogenated disinfection byproducts, halophenylacetamides (HPAcAms), were successfully identified for the first time in both the laboratory experiments and realistic drinking water. The formation mechanism of HPAcAms during chlorination of phenylalanine in the presence of Br– and I–, occurrence frequencies, and concentrations in authentic drinking water were investigated, and a quant. structure-activity relationship (QSAR) model was developed based on the acquired cytotoxicity data. The results demonstrated that HPAcAms could be formed from phenylalanine in chlorination via electrophilic substitution, decarboxylation, hydrochloric acid elimination, and hydrolysis. The HPAcAm yields from phenylalanine were significantly affected by contact time, pH, chlorine dose, and temperature Nine HPAcAms with concentrations in the range of 0.02-1.54 ng/L were detected in authentic drinking water samples. Most tested HPAcAms showed significantly higher cytotoxicity compared with dichloroacetamide, which is the most abundant aliphatic haloacetamide DBP. The QSAR model demonstrated that the cellular uptake efficiency and the polarized distributions of electrons of HPAcAms play essential roles in their cytotoxicity mechanisms. In the experiment, the researchers used many compounds, for example, 2-(2-Chlorophenyl)acetamide (cas: 10268-06-1Recommanded Product: 2-(2-Chlorophenyl)acetamide).
2-(2-Chlorophenyl)acetamide (cas: 10268-06-1) belongs to amides. Compared to amines, amides are very weak bases and do not have clearly defined acid–base properties in water. On the other hand, amides are much stronger bases than esters, aldehydes, and ketones. Amides can be freed from solvent or water by drying below their melting points. These purifications can also be used for sulfonamides and acid hydrazides.Recommanded Product: 2-(2-Chlorophenyl)acetamide
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Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics