Flamma®648 is a fluorescent dye that emits red fluorescence. Its most efficient excitation is at 648nm laser, and it has a maximum emission value at 672nm. It is bright and has excellent light stability, and it also has a similar optical spectrum to Alexa Fluor®647 and Cy5. Flamma®648 dye is used in various ways such as intracellular imaging and target detection by combining with a variety of substances such as antibodies, proteins etc. Fluor Flamma®648 Carboxylic acid can induce amide bond with amine through appropriate catalytic reaction on terminal of Flamma®648. Excitation / Emission (nm): 648 / 663 nm. Spectrally similar dyes: Alexa Fluor®680, Cy®5.5, DyLight®680, CF™680, IRDye®680LT. Extinction coefficient: 250,000 cm-1M-1.