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Protein Labeling Reagents

Various reagents designed to selectively label target proteins. Products include classic dyes, radioisotope labels, biotinylation reagents, fluorescent labels, molecular probes, assays, and labeling kits.
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1

Molecular Probes™ Alexa Fluor™ 488 Alkyne (Alexa Fluor™ 488 5-Carboxamido-(Propargyl), Bis(Triethylammonium Salt)), 5-isomer  DFS Item

Alexa Fluor™ 488 Alkyne (Alexa Fluor™ 488 5-Carboxamido-(Propargyl), Bis(Triethylammonium Salt)), 5-isomer

2

Invitrogen™ Alexa Fluor™ 633 NHS Ester (Succinimidyl Ester)  DFS Item

Alexa Fluor™ 633 is a bright and photostable far-red dye with excitation ideally suited to the 633 nm laser line.

Product Type NHS Ester (Succinimidyl Ester)
Label or Dye Alexa Fluor™ 633
Emission 639 nm
Excitation 621 nm
3

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

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

4

Molecular Probes™ Alexa Fluor™ 790 NHS Ester (Succinimidyl Ester)  DFS Item

Alexa Fluor™ 790 is a bright and photostable near-IR dye that is spectrally similar to indocyanine green (ICG) and the IRDye™ 800 dye.

5

Thermo Scientific™ EZ-Link™ Iodoacetyl-LC-Biotin

Biotinylate reduced cysteines (-SH groups) at high pH via irreversible thioether bonds with this haloacetyl-activated, sulfhydryl-reactive biotinylation reagent.

6

Invitrogen™ Alexa Fluor™ 660 NHS Ester (Succinimidyl Ester)  DFS Item

Alexa Fluor™ 660 is a bright and photostable far-red dye with excitation ideally suited to the 633 or 647 nm laser line.

7

Thermo Scientific™ DyLight™ 650 NHS Ester

Label antibodies or other proteins as probes for fluorescence imaging assays with the full spectral range of NHS ester-activated DyLight Dyes.

Labeling Target Proteins
Content And Storage Store desiccated at -20°C.
Product Type Dye
Label or Dye DyLight™ 650
Reactive Moiety Active Ester, Succinimidyl Ester, NHS Ester
Solubility DMF (Dimethylformamide)
Emission 672
Excitation 652
Label Type DyLight Fluors
Chemical Reactivity Amine
Product Line DyLight
8

Thermo Scientific™ DyLight™ 650-4xPEG NHS Ester

PEGylated far-red dye for enhanced fluorescence and reduced non-specific binding.

9

Invitrogen™ 5-ROX (5-Carboxy-X-Rhodamine, Triethylammonium Salt), single isomer  DFS Item

5-ROX (5-Carboxy-X-Rhodamine, Triethylammonium Salt), single isomer

10

Invitrogen™ BODIPY™ 576/589 NHS Ester (Succinimidyl Ester)  DFS Item

BODIPY™ 576/589 dye is bright, red fluorescent dye with similar excitation and emission to Rhodamine Red™ and Alexa Fluor™568.

12

Invitrogen™ LysoLight™ sDBCO Reagents

LysoLight sDBCO reagents are engineered for use with SiteClick Duet and Quartet antibody labeling kits. They offer robust and reproducible conjugation without compromising antibody-target affinity.

Shipping Condition Ambient
Labeling Target Azido Modified Antibodies
Content And Storage -25°C to +8°C
For Use With (Equipment) Flow Cytometer, Fluorescence Microscope, High Content Analysis Instrument
Product Type Reactive Dye
Reactive Moiety sDBCO alkyne
Solubility DMSO (Dimethylsulfoxide)
Labeling Method Click Chemistry
Label Type LysoLight
For Use With (Application) SiteClick Antibody Labeling
Chemical Reactivity Azide
Product Line LysoLight
Detection Method Fluorescence
13

Invitrogen™ pHrodo™ Dyes for Amine Labeling  DFS Item

Amine-reactive and TFP ester pHrodo dyes enable accurate measurement of cell endocytosis and phagocytosis, with low signal-to-background, for use in live cell assays.

Shipping Condition Room Temperature
Label Type pHrodo (pH sensitive)
Chemical Reactivity Amine
Product Line pHrodo
14

Thermo Scientific™ DyLight™ 515-LS NHS Ester

Label antibodies or other proteins for FRET and multiplex fluorescence assays using fluors with large Stokes shifts (488nm excitation; yellow to far-red emission).