About Sytox Red

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Sytox Red from Thermo Fisher Scientific is a cell-impermeant, fluorogenic nucleic acid stain that can be used as a viability dye for use in flow cytometry and as a nuclear counterstain in fluorescence microscopy. It has an excitation peak at 639 nm an emission peak at 655 nm, similar to To-Pro-3.

Dyes similar to Sytox Red based on emission

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7-AAD APC ATTO 633 ATTO Rho14 Alexa Fluor 633 Alexa Fluor 635 BDY 650-X SE BODIPY 650/665 Brilliant Ultraviolet 661 CF633 CF640R Calcein Deep Red Calcein Deep Red AM CellTrace Far Red CellTracker Deep Red Chromeo 642 Cyanine 5 SE DY-481XL DY-520XL DyLight 633 E2-Crimson ExoBrite 640/660 EV Membrane Stain FLUX 640 Flash Phalloidin NIR 647 Fura Red AM (Ca2+bound) Fura Red AM (Ca2+free) FxCycle Far Red Helix NP NIR Janelia Fluor 635 Janelia Fluor 646 LipidSpot 610 Live-or-Dye 640/662 LysoBrite NIR LysoView 633 MagDot 655 MemBrite Fix 640/660 MitoLite Deep Red FX660 MitoView 633 MultiDot 655 NL 637 Nile Blue NovaFluor Red 660 NovaFluor Yellow 660 Nuclear-ID Red SureLight P3 PhenoVue 641 Mitochondrial Stain PromoFluor 633P Qdot 655 ROS-ID Red ReadiLink 633-655 STAR 635 STAR 635P STAR RED SureLight APC TO-Pro 3 TOTO-3 TagRFP657 Thiazole Red Thiazole Red Homodimer ViaKrome 638 VivaFix 649/660 eFluor 650NC eFluor 660 Fix Viability eVolve 655 iFluor 633 mPlum