98786-85-7

Upstream product

• 1709-59-7 4-amino-N,N-dimethylbenzenesulphonamide 
• 98506-67-3 2-(dodecyl-14-crown-4)phenol 
• 92144-75-7 3,7-dioxanonane-1,9-diylbis(toluene-p-sulphonate) 
• 98506-66-2 2-dodecyl-2-(2'-methoxybenzyl)propane-1,3-diol 
• 98514-81-9 6-dodecyl-6-(2-methoxybenzyl)-1,4,8,11-tetraoxacyclotetradecane 

Relevant academic research and scientific papers

Synthesis and Cation-Extraction Study of Lithium-Selective Chromogenic 14-Crown-4 Derivatives

Various proton-dissociable chromogenic crown ethers have been synthesized, which possess a 14-crown-4 ring and a nitrophenol or azophenol chromophore.Proton-dissociation of the chromogenic crown ethers and extraction equilibria between the crown ether dic

HIGHLY LITHIUM-SELECTIVE CROWN ETHER DYES FOR EXTRACTION PHOTOMETRY

Lipophilic 14-crown-4 derivatives bearing a chromogen such as nitrophenol and azophenol residues prove to be excellent extraction-photometric reagents for lithium ion.The lithium selectivities are extremely high, the extraction equilibrium constants for l