76476-06-7Relevant articles and documents
32. Kreuzkonjugierte Cyanine und Merocyanine aus Salzen 1-substituierter 2,3-Dimethylchinoxaline. Ueber die Indikatoreigenschaften der Farbbasen und die Tautomerie der konjugaten Farbsaeuren
Schelz, Dieter
, p. 379 - 399 (1983)
UV./Vis. and 1H-NMR. spectra of the indicator bases 1 in acidic solutions are presented.The solutions of the dye acids N and NN' (Scheme 2) are in general not stable due to tautomerism.The relative pKa-values are set in relation to data of equi