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A New Azo Dye for the Selective Detection of Glycine

In this manuscript, we report the synthesis of new azo
dye (E)-4-((5-methoxythiazolo[4,5-b]pyridine-2-yl)diazenyl)N-phenylaniline (BK2).
This new azo dye revealed a pink color in the solution. Notably, this dye
selectively detects only glycine among all the amino acids and a visual color
change from light pink to purple can be assessed. Hence, the new azo dye finds application as colorimetric
chemosensor for the rapid, selective and sensitive detection of glycine (Gly). The
dye can be potentially used for the detection of high levels of glycine in the
serum caused due to hyperglycinaemia.