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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 – 15 of 296 results
1

Molecular Probes™ Alexa Fluor™ 594 Azide (Alexa Fluor™ 594 Carboxamido-(6-Azidohexanyl), Triethylammonium Salt), mixed isomers  DFS Item

Alexa Fluor™ 594 Azide (Alexa Fluor™ 594 Carboxamido-(6-Azidohexanyl), Triethylammonium Salt), mixed isomers

3

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.

4

Invitrogen™ Alexa Fluor™ Plus Amine-Reactive Dyes
GREENER_CHOICE

Discover Alexa Fluor Plus amine-reactive dyes, the next-generation fluorescent labeling solution. Engineered to minimize nonspecific staining and enhance signal-to-noise ratios, these dyes ensure precise detection of low-abundance targets. Achieve bright, reliable imaging with reduced background interference.

Labeling Target Primary amines
Content And Storage -25°C to 8°C
Format Amine-reactive dye
Product Type Amine-reactive Dye
Formulation Solid
Solubility DMSO
Label Type Alexa Fluor
Product Line Alexa Fluor
Detection Method Fluorescence
5

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)

6

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.

8

Thermo Scientific™ DyLight™ 775-B2 NHS Ester

Label amine-containing molecules for fluorescence imaging or flow cytometry with these benzopyrillium- and cyanine-based, infrared-emitting (633 or 700 laser) NHS ester dyes.

9

Invitrogen™ Alexa Fluor™ 633 C5 Maleimide  DFS Item

Alexa Fluor™ 633 is a bright, red fluorescent dye with excitation ideally suited to the 633 nm laser line.

10

Thermo Scientific™ DyLight™ 550 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™ 550
Reactive Moiety Active Ester, Succinimidyl Ester, NHS Ester
Solubility DMF (Dimethylformamide)
Emission 576
Excitation 562
Label Type DyLight Fluors
Chemical Reactivity Amine
Product Line DyLight
12

Thermo Scientific™ LanthaScreen™ Thiol Reactive Tb Chelate  DFS Item

LanthaScreen™ Thiol Reactive Tb Chelate

Shipping Condition Dry Ice
Content And Storage LanthaScreen™ TR-FRET Labeling Reagents are provided lyophilized. Store at -20°C, desiccated, and protected from light. After reconstitution, terbium lanthanide chelates should be stored on ice and used within the same day.
Product Type Thiol Reactive Tb Chelate
Product Line LanthaScreen
13

Thermo Scientific™ DyLight™ 800 NHS Ester

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

Content And Storage Store desiccated at -20°C.
Label or Dye DyLight™ 800
Reactive Moiety Active Ester, Succinimidyl Ester, NHS Ester
Solubility DMF (Dimethylformamide)
Emission 794
Excitation 777
Label Type DyLight Fluors
Chemical Reactivity Amine
Product Line DyLight
14

Thermo Scientific™ DyLight™ 594 Maleimide

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

15

Invitrogen™ Alexa Fluor™ 568 Hydrazide  DFS Item

Alexa Fluor™ 568 Hydrazide is useful as a cell tracer and as a reactive dye for labeling aldehydes or ketones in polysaccharides or glycoproteins.