Abu El-Hamd, R. M. published the artcileSome new fused heterocyclic cyanine dyes with ring junction, Quality Control of 606-55-3, the publication is Chemical Papers (1997), 51(2), 117-127, database is CAplus.
New asym. pyrazolo[4′,5′:4,5]imidazo[3,2-a]/pyrrolo[1,2-a]pyridinium/quinolinium bromide iodide 1[4(1)]monomethine cyanines (I; R = H, Ph; A = 2 H, C4H4; X = CH2, NH; Z = 2 H, C4H4), 1[2(4)]trimethine cyanines (II; A = 2 H, C4H4; X = CH2, NH; Z = 2 H, C4H4) and/or 1-styryl cyanines (III; A = 2 H, C4H4; X = CH2, NH; Y = H, p-OMe, p-NO2) were synthesized to study their spectral behavior, solvatochromism, and acid-base properties. These dyes were characterized by elemental anal., IR, 1H NMR, and electronic absorption spectra.
Chemical Papers published new progress about 606-55-3. 606-55-3 belongs to iodides-buliding-blocks, auxiliary class Quinoline,Salt, name is 1-Ethyl-2-methylquinolin-1-ium iodide, and the molecular formula is C12H14IN, Quality Control of 606-55-3.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com