3H-Indolium, 2-[2-[3-[2-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-3,3-dimethyl-1-[6-oxo-6-(2-propyn-1-ylamino)hexyl]-

Alkyne derivative of Cyanine7, a near infrared fluorophore, analog of Cy7?. The alkyne can be conjugated to a variety of azides via copper-catalyzed Click chemistry._x000D_ The dye has limited solubility in water, but it can be successfully conjugated in aqueous buffers with the addition of DMSO or DMF.