FLUORESCEIN DERIVATIVE OR SALT OF THE SAME, FLUORESCENT PROBE FOR MEASURING GLUTATHIONE-S-TRANSFERASE, AND METHOD FOR MEASURING GLUTATHIONE-S-TRANSFERASE ACTIVITY USING PROBE

摘要

PROBLEM TO BE SOLVED: To provide a fluorescent probe which has low GST independent reactivity with glutathione, can achieve a sufficiently high S/N ratio, and can minimize a decrease in fluorescence intensity of a product under a pH condition in an acidic region.SOLUTION: Provided is a fluorescein derivative represented by a formula (1) or a salt of the same.SELECTED DRAWING: Figure 1