Devices made with cheap strips of paper have outperformed two other testing methods in detecting malaria infection in ...

四臂聚乙二醇（4-arm peg）：以一个中心（4-arm peg）核心为起点，向外延伸出四个peg链，提供良好的水溶性和生物相容性。 醛基（Aldehyde, -CHO）：具有高反应活性，能够与氨基（-NH₂）发生席夫碱反应，生成稳定的亚胺键（-C=N-）。

针对硝基酚类环境污染物（如2,4-DNP和4-NP）的精准检测需求，研究人员设计合成了一种基于嘧啶酰肼配体的Zn(II)配位聚合物（Zn(II)-CP）。该探针通过荧光猝灭效应实现对目标物的高灵敏度（Ksv达104 M?1量级）和特异性识别，并在自然水体中取得99.89–101.50%的回收率，为环境监测提供了新型分析工具。

Aldehyde/Acetal（2）：另两条臂末端为醛基（Aldehyde）或其保护形式乙缩醛（Acetal）。 醛基可与氨基（-NH₂，如蛋白质、多肽的伯胺）发生希夫碱反应，形成动态共价键；乙缩醛需在酸性条件下水解为醛基后使用。

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A new electrophilic polymer, 2,4-dinitrophenyl ether of polyvinyl alcohol (PVA-DNP), having a degree of substitution of 0.5 was prepared from polyvinyl alcohol (PVA) and 1-fluro-2,4-dinitrobenzene ...

Aldehyde dehydrogenase‐2 (ALDH2), a mitochondrial enzyme, detoxifies reactive aldehydes such as 4‐hydroxy‐2‐nonenal (4HNE). A highly prevalent E487K mutation in ALDH2 (ALDH2*2) in East Asian people ...

Answer: (A) forms a 2,4-DNP derivative. Therefore, it is an aldehyde or a ketone. Since it does not reduce Tollens’ or Fehling reagent, (A) must be a ketone. (A) responds to iodoform test.

1 Faculty of Science, Engineering and Computing, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, United Kingdom; 2 School of Sport, Exercise and ...