Protein Labeling Reagents

Thermo Scientific™ Alexa Fluor™ 420 NHS Ester (Succinimidyl Ester)

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Alexa Fluor 420 NHS Ester is an amine-reactive dye optimized for multiplex IHC and spatial biology. A long Stokes shift and 420/500 ex/em make it a good match for the CFP filter.

Molecular Probes™ Alexa Fluor™ 488 5-SDP Ester (Alexa Fluor™ 488 Sulfodichlorophenol Ester)  

Alexa Fluor™ 488 5-SDP ester (Alexa Fluor™ 488 sulfodichlorophenol ester)

Atto 633 NHS Ester BioReagent, Suitable for Fluorescence, 90% (Coupling to Amines), MilliporeSigma™ Supelco™

Invitrogen™ BODIPY™ 630/650-X NHS Ester (Succinimidyl Ester)  

BODIPY™ 630/650-X dye is bright, far-red fluorescent dye. It has a high extinction coefficient and fluorescence quantum yield and is relatively insensitive to solvent polarity and pH change.

Invitrogen™ BODIPY™ 650/665-X NHS Ester (Succinimidyl Ester)  

BODIPY™ 650/665-X dye is bright, far-red fluorescent dye with similar excitation and emission to Cy5 or Alexa Fluor™ 647.

Invitrogen™ Dansyl Ethylenediamine, 5-Dimethylaminonaphthalene-1-(N-(2-Aminoethyl))sulfonamide  

5-dimethylaminonaphthalene-1-(N-(2-aminoethyl))sulfonamide (dansyl ethylenediamine)

Invitrogen™ 5-DTAF (5-(4,6-Dichlorotriazinyl) Aminofluorescein), single isomer  

Invitrogen™ BODIPY™ 493/503 NHS Ester (Succinimidyl Ester)  

BODIPY™ 493/503 dye is bright, green fluorescent dye with similar excitation and emission to fluorescein (FITC) or Alexa Fluor™ 488 dye.

Invitrogen™ BODIPY™ FL NHS Ester (Succinimidyl Ester)  

BODIPY™ FL dye is bright, green fluorescent dye with similar excitation and emission to fluorescein (FITC) or Alexa Fluor™ 488 dye.

Invitrogen™ BODIPY™ 530/550 NHS Ester (Succinimidyl Ester)  

BODIPY™ 530/550 dye is bright, orange fluorescent dye. It has a high extinction coefficient and fluorescence quantum yield and is relatively insensitive to solvent polarity and pH change.

Invitrogen™ Dabcyl, SE, 4-((4-(dimethylamino)phenyl)azo)benzoic Acid, Succinimidyl Ester  

4-((4-(dimethylamino)phenyl)azo)benzoic acid, succinimidyl ester (dabcyl, SE)

Invitrogen™ DNP-X, SE, 6-(2,4-Dinitrophenyl)aminohexanoic Acid, Succinimidyl Ester  

DNP-X, SE, 6-(2,4-Dinitrophenyl)aminohexanoic Acid, Succinimidyl Ester

Invitrogen™ Fluorescein-5-Maleimide  

Alternative to fluorescein

Invitrogen™ Fluorescein-5-Isothiocyanate (FITC 'Isomer I')  

Fluorescein-5-Isothiocyanate (FITC 'Isomer I')

Invitrogen™ 5(6)-SFX (6-(Fluorescein-5-(and-6)-Carboxamido) Hexanoic Acid, Succinimidyl Ester), mixed isomers  

5(6)-SFX (6-(Fluorescein-5-(and-6)-Carboxamido) Hexanoic Acid, Succinimidyl Ester), mixed isomers