CF(TM)660C and CF(TM)660R are two spectrally similar fluorescent dyes that emit fluorescence at about 685 nm in the borderline spectral region between far-red and near-IR. Although their absorption maxima are at around 660 nm, both dyes can be sufficiently excited by the 633 or 635 nm laser. When combined with other CF(TM) dyes of shorter wavelengths, CF(TM)660C or CF(TM)660R can serve as a useful long wavelength dye in multi-color detection applications. The two dyes are spectrally similar to Alexa Fluor(R) 660 but are far superior to the latter in performance. CF(TM)660R is a rhodamine-based dye. Like rhodamine dyes in general, CF(TM)660R is exceptionally photostable, compared to both Alexa Fluor(R) 660 and CF(TM)660C. CF(TM)660R is also much brighter than Alexa Fluor(R) 660, though not as bright as CF(TM)660C. The superior photostability and excellent brightness of CF(TM)660R make the dye an ideal choice for confocal microscopy and other demanding applications.
Purity: >=90% (TLC)
Storage: -20C
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