HPLC of Formula: 1127-45-3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about 2,8-Dihydroxyquinoline based sensitive fluoroionophore towards Cu2+ ion. Author is He, Chunlian; Li, Cheng; Li, Zhiguang; Li, Huanyin; Xiang, Jiannan; Yan, Zhengli.
Novel water soluble quinoline derivatives 1a∼1d were synthesized from 8-hydroxyquinoline and the fluorescence of these compounds had been quenched by Cu2+ or Fe3+ in absolute water. The fluorescence of 1a was quenched by 93% with addition of 50 μM of Cu2+ in absolute water and 75% in the presence of 50 μM of Fe3+ with the quenching ratio (Cu2+:Fe3+) of 1:0.80, showing much higher sensitivity and selectivity of Cu2+ to Fe3+. The presence of some other metal ions such as K+, Ca2+, Zn2+, Al3+, Mn2+, Fe2+, Ba2+, Co2+, Ni+, Cr3+, Cd2+, Cu2+, Hg2+, Pb2+, Sn2+, Na+ and Mg2+ had little influence on the selectivity and sensitivity of Cu2+. The easily available 1a could be considered a potential fluorescence sensor for Cu2+.
After consulting a lot of data, we found that this compound(1127-45-3)HPLC of Formula: 1127-45-3 can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider