At 25 °C pyridine has a viscosity of 0.88 mPa/s and thermal conductivity of 0.166 W·m−1·K−1. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. The enthalpy of vaporization is 35.09 kJ·mol−1 at the boiling point and normal pressure.The enthalpy of fusion is 8.28 kJ·mol−1 at the melting point. Formula: C6H4BrNO.
Tsyrenova, Biligma D.;Khrustalev, Victor N.;Nenajdenko, Valentine G. research published 《 Synthesis of blue light emitting heterocycles via cyclization of 2-pyridine derived 4-azido-r1,2,3-triazoles》, the research content is summarized as follows. An efficient synthesis of 2-pyridine derived 4-azido-1,2,3-triazoles I (R = pyridin-2-yl, 6-bromopyridin-2-yl, 8-hydroxyquinolin-2-yl, 1,8-naphthyridin-2-yl, etc.; R1 = Ph, 4-methylphenyl, 4-fluorophenyl, 3,4-dichlorophenyl, etc.) was elaborated using the corresponding dichlorodiazadienes Cl2C=C(R)N=NR1 as precursors. The reaction of the prepared 2-azine substituted diazadienes with sodium azide permits the preparation of target triazoles I isolated in up to 92% yield. Subsequent thermal cyclization was studied. Elimination of mol. nitrogen promoted the cyclization of nitrene at the azine nitrogen. As a result, a family of 2H-[1,2,3]triazolo[4′,5′:3,4]pyrazolo[1,5-a]pyridin-5-ium-4-ides II (R2 = H, Me; R3 = H, Me, Br; R2R3 = -CH=CH-CH=CH-, -C(OH)=CH-CH=CH-, -CH=C(CH3)-CH=CH-, -N=CH-CH=CH-) was prepared The synthesized compounds II are members of a new heterocyclic system. Moreover, these compounds II are new attractive blue light emitting mols.
Formula: C6H4BrNO, 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%., 31181-90-5.