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    Spectrophotometric characteristics and assay of pure pyronin Y

    The spectrophotometric characteristics of analytically pure pyronin Y have been investigated. Addition of metal ions (Fe3+, Zn2+, and Mg2+) and of dextrin were shown not to influence the absorption characteristic...

    P. Jakobsen, H. Lyon, S. Treppendahl in Histochemistry (1984)