Flamma®774 is a bright and stable near-infrared fluorescent dye that emits the longest range of fluorescence among Flamma®Fluors products. It features high water solubility and low toxicity and has a similar optical spectrum to Alexa Fluor®790, IRDye®800CW. Near-infrared fluorescent dye is mainly used for In-Vivo Imaging in drug delivery and tumor research, as it is highly permeable to biological tissue.Flamma®774 Amine is an unreactive functional group that induces amide bond with carboxyl group in substrate of labeling target through appropriate catalytic reaction. Excitation / Emission (nm): 774 / 806 nm. Spectrally similar dyes: Alexa Fluor®790, IRDye®800CW . Extinction coefficient: 200,000 cm-1M-1. CF280: 0.03.