Cy 5.5 活性酯

2-((1E,3E,5E)-5-(3-(6-(2,5-Dioxopyrrolidin-1-yloxy)-6-oxohexyl)-1,1-dimethyl-1H-benzo[e]indol-2(3H)-ylidene)penta-1,3-dienyl)-3-ethyl-1,1-dimethyl-1H-benzo[e]indolium chloride