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Alexa Fluor 633

Alexa Fluor™ 633 (Ex-Max 632 nm/Em-Max 647 nm)

Alexa Fluor™ 633 (AF633, Alexa 633) has an excitation peak at 632nm and an emission peak at 647nm. It can be used with the following analysis platforms: Flow Cytometry, Immunoassay.

Excitation & emission spectra

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Key facts

Excitation maximum
632 nm
Emission maximum
647 nm
Optimal laser line
628-640
Optimal filter
630/69
Relative brightness
3 of 5
Extinction coefficient
239000
Commercial antibodies
154 from 4 suppliers

Alexa Fluor 633 has an excitation maximum at 632 nm and an emission maximum at 647 nm, a Stokes shift of 15 nm. Its extinction coefficient is 239000 M⁻¹cm⁻¹. It is optimally excited by the 628-640 laser line.

Frequently asked questions

What is Alexa Fluor 633?
Alexa Fluor™ 633 (AF633, Alexa 633) has an excitation peak at 632nm and an emission peak at 647nm. It can be used with the following analysis platforms: Flow Cytometry, Immunoassay.
What laser excites Alexa Fluor 633?
Alexa Fluor 633 is optimally excited by the 628-640 laser line. Its excitation maximum is 632 nm.
What filter should I use to detect Alexa Fluor 633?
A 630/69 filter captures the peak of the Alexa Fluor 633 emission near 647 nm with minimal spillover.
How bright is Alexa Fluor 633?
Alexa Fluor 633 has a relative brightness of 3 out of 5.
How many antibodies are available conjugated to Alexa Fluor 633?
FluoroFinder tracks 154 commercially available Alexa Fluor 633 conjugates, searchable by target, clone, host and application.