A perimidine-based squarylium dye contains a compound represented by Formula (I),
the compound containing an isomer A and satisfying the following formula:
Pa≧95(%)
wherein the isomer A is an isomer of the peak shown in the longest retention time among all peaks due to isomers obtained by analysis of the compound by means of reversed-phase high-performance liquid chromatography, and Pa represents a value of the peak area of the isomer A relative to the peak area of all peaks.
一种
嘧啶基的方苯基
染料包含由
化学式(I)表示的化合物,该化合物含有异构体A,并满足以下公式:Pa≧95(%)其中异构体A是通过反相高效
液相色谱分析所得的所有异构体中具有最长保留时间的峰的异构体,并且Pa表示异构体A的峰面积相对于所有峰的峰面积的值。