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Alexa Fluor 635

Alexa Fluor™ 635 (Ex-Max 633 nm/Em-Max 647 nm)

Alexa Fluor™ 635 (AF635, Alexa 635) has an excitation peak at 633nm and an emission peak at 647nm. It can be used with the following analysis platforms: Flow Cytometry, Immunoassay, IHC, Western Blot.

Excitation & emission spectra

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Key facts

Excitation maximum
633 nm
Emission maximum
647 nm
Optimal laser line
628-640
Optimal filter
630/69
Relative brightness
3 of 5
Extinction coefficient
140000
Commercial antibodies
3 from 2 suppliers

Alexa Fluor 635 has an excitation maximum at 633 nm and an emission maximum at 647 nm, a Stokes shift of 14 nm. Its extinction coefficient is 140000 M⁻¹cm⁻¹. It is optimally excited by the 628-640 laser line.

Frequently asked questions

What is Alexa Fluor 635?
Alexa Fluor™ 635 (AF635, Alexa 635) has an excitation peak at 633nm and an emission peak at 647nm. It can be used with the following analysis platforms: Flow Cytometry, Immunoassay, IHC, Western Blot.
What laser excites Alexa Fluor 635?
Alexa Fluor 635 is optimally excited by the 628-640 laser line. Its excitation maximum is 633 nm.
What filter should I use to detect Alexa Fluor 635?
A 630/69 filter captures the peak of the Alexa Fluor 635 emission near 647 nm with minimal spillover.
How bright is Alexa Fluor 635?
Alexa Fluor 635 has a relative brightness of 3 out of 5.
How many antibodies are available conjugated to Alexa Fluor 635?
FluoroFinder tracks 3 commercially available Alexa Fluor 635 conjugates, searchable by target, clone, host and application.