Product Description: FD dye 7 (compound 7) is an intermediate of heptamethacyanine dye fluorescent dye and can be used to synthesize dyes FD-1 and FD-2[1].
Formula: C39H37ClN2O6S2
References: [1]Near IR second window excitation/emission fluorescent dye and preparation method thereof. China, CN110041723 A 2019-07-23.