Loading the Dye Directory…

RayBright PerCP-Cy5.5

RayBright PerCP-Cy5.5 is a red-emitting tandem fluorophore that was originally designed to make the PerCP fluorophore more stable and increase signal intensity. The donor molecule, PerCP can be excited by the 488-nm blue laser and and transfers energy to the acceptor molecule, Cy5.5, which emitts light that can be captured with a 695/40 nm bandpass filter. PerCP-Cy5.5 has an excitation peak at 482 nm and an emission peak at 695 nm. There are superior alternatives to PerCP and PerCP-Cy5.5 including RealBlue 705 (BD Biosciences), NovaFluor Blue 690 or PerCP-eFluor™ 710.

Excitation & emission spectra

400450500550600650700750800

Key facts

Excitation maximum
482 nm
Emission maximum
695 nm
Optimal laser line
488
Relative brightness
2 of 5
Extinction coefficient
350000
Molecular weight
58000
Commercial antibodies
26 from 1 supplier

RayBright PerCP-Cy5.5 has an excitation maximum at 482 nm and an emission maximum at 695 nm, a Stokes shift of 213 nm. Its extinction coefficient is 350000 M⁻¹cm⁻¹. It is optimally excited by the 488 laser line.

Frequently asked questions

What is RayBright PerCP-Cy5.5?
RayBright PerCP-Cy5.5 is a red-emitting tandem fluorophore that was originally designed to make the PerCP fluorophore more stable and increase signal intensity. The donor molecule, PerCP can be excited by the 488-nm blue laser and and transfers energy to the acceptor molecule, Cy5.5, which emitts light that can be captured with a 695/40 nm bandpass filter. PerCP-Cy5.5 has an excitation peak at 482 nm and an emission peak at 695 nm. There are superior alternatives to PerCP and PerCP-Cy5.5 including RealBlue 705 (BD Biosciences), NovaFluor Blue 690 or PerCP-eFluor™ 710.
What laser excites RayBright PerCP-Cy5.5?
RayBright PerCP-Cy5.5 is optimally excited by the 488 laser line. Its excitation maximum is 482 nm.
How bright is RayBright PerCP-Cy5.5?
RayBright PerCP-Cy5.5 has a relative brightness of 2 out of 5.
How many antibodies are available conjugated to RayBright PerCP-Cy5.5?
FluoroFinder tracks 26 commercially available RayBright PerCP-Cy5.5 conjugates, searchable by target, clone, host and application.