Pyridine has a conjugated system of six π electrons that are delocalized over the ring. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. HPLC of Formula: 31181-90-5.
Wang, Zihua;Zheng, Chunhong;Xu, Dongming;Liao, Guanming;Pu, Shouzhi research published 《 A fluorescent sensor for Zn2+ and Cd2+ based on a diarylethene derivative with an indole-2-methylhydrazone moiety》, the research content is summarized as follows. A fluorescent sensor for Zn2+ and Cd2+ based on a diarylethene derivative with an indole-2-methylhydrazone moiety was constructed. The photochromism and photoswitchable fluorescence can be reversibly modulated by UV/Vis light and M2+/EDTA (M = Zn2+ or Cd2+). Upon addition of Zn2+ or Cd2+, an obviously large red-shift emission peak by 105 nm, and fluorescence quantum yields enhanced by 72-fold and 48-fold, resp., with a concomitant black-to-green fluorescence color change was observed The 1:1 stoichiometry complexes with Zn2+ and Cd2+ were confirmed by both Job′s plot and Benesi-Hildebrand expression. As a result, the binding constants between sensor and metal ions were calculated to be 8.88 x 104 L mol-1 for Zn2+ and 4.36 x 104 L mol-1 for Cd2+, resp. And the detection limit of 1o for Zn2+ and Cd2+ was 3.82 x 10-7 mol L-1, and 5.74 x 10-7 mol L-1, resp. Moreover, the fluorescent can be used to detect Zn2+ and Cd2+ in tap water sample with a high accuracy.
31181-90-5, 5-Bromopyridine-2-carbaldehyde is a useful research compound. Its molecular formula is C6H4BrNO and its molecular weight is 186.01 g/mol. The purity is usually 95%.
5-Bromopyridine-2-carbaldehyde is a water soluble organic molecule that has been shown to inhibit the mitochondrial respiratory chain. It is a structural analog of the natural substrate for mitochondrial cytochrome c oxidase, 5-aminolevulinic acid. This compound has been shown to be selective against cancer cells and has anti-viral properties. The photophysical properties of 5-bromopyridine-2-carbaldehyde have been studied extensively. The fluorescence quantum yield of this molecule in aqueous solution is 0.06%., HPLC of Formula: 31181-90-5