Fluorescence detection of Zn2+ followed by inorganic and organic phosphates and DNA by a water soluble and biologically benign glycoconjugate

This invention relates to a A compound (L) for primary detection of zinc ions (Zn2+) ions represented by formula (I)
Formula (I): X-N=CH-R

wherein, X is a hexose sugar moiety and R is a 2-hydroxy-1-naphthyl.
This invention also relates to the methods for selective detection of Zinc ions (Zn2+) and phosphate.