MQAE是一种荧光氯离子指示剂，它比通过36Cl同位示踪法及微电极等方法测量氯离子更有选择性，更有效。 1-(Ethoxycarbonylmethyl)-6-methoxyquinolinium bromide, a fluorescent chloride indicator dye, may be used to measure intracellular and extracellular chloride concentrations. MQAE is a fluorescent chloride ion indicator that is more sensitive and selective than 36Cl and microelectrode-based methods for chloride measurement in cells. MQAE is a fluorescent indicator that is quenched via collision with chloride. 1-(Ethoxycarbonylmethyl)-6-methoxyquinolinium bromide, a fluorescent chloride indicator dye, may be used to measure intracellular and extracellular chloride concentrations.