Koraiem, A. I. M. published the artcileOrientation in the synthesis and absorption spectra of 1H-pyrazolo[4,3-d][1,3]oxazole methine cyanine dyes, Quality Control of 606-55-3, the publication is Chemical Papers (1998), 52(6), 762-770, database is CAplus.
3,5-Dimethyl-1-phenyl-1H-pyrazolo[4,3-d][1,3]oxazole was prepared and oriented as starting material in the synthesis of some mono-, di, and trimethine cyanine dyes. The new cyanines were characterized by IR and 1H NMR spectral data. The visible absorption spectra of the cyanine dyes are discussed.
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