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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

Invitrogen™ Alexa Fluor™ 488 C5 Maleimide  DFS Item

Alexa Fluor™ 488 is a bright, green fluorescent dye with excitation ideally suited to the 488 nm laser line.

5

Invitrogen™ Alexa Fluor™ 594 Hydrazide, for microinjection  DFS Item

Alexa Fluor™ 594 Hydrazide is useful as a cell tracer and as a reactive dye for labeling aldehydes or ketones in polysaccharides or glycoproteins.

6

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
7

Thermo Scientific™ EZ-Link™ Sulfo-NHS-Biotin

Thermo Scientific™ EZ-Link™ Sulfo-NHS-Biotin is a short-chain, water-soluble biotinylation reagent for labeling antibodies, proteins and other molecules that have primary amines.

Cell Permeability Cell-Impermeant
Product Type Sulfo-NHS-Biotin
Spacer Short
Label or Dye Biotin
Solubility DMF (Dimethylformamide),DMSO (Dimethylsulfoxide),Water
Chemical Reactivity Amine
Product Line EZ-Link
8

Thermo Scientific™ EZ-Link™ Sulfo NHS-LC-LC-Biotin, No-Weigh™ Format

Thermo Scientific EZ-Link Sulfo-NHS-LC-LC-Biotin enables simple and efficient biotin labeling of antibodies, proteins, and any other primary amine–containing macromolecules.

Label Type Biotin & Analogs
9

Invitrogen™ SiteClick™ sDIBO Alkyne Kits for Antibody Labeling

Easily attach Alexa Fluor™ pHrodo™ and Biotin sDIBO Alkyne tags to azido-modified antibodies using SiteClick™ chemistry.

Shipping Condition Wet Ice
Labeling Target Azido modified antibodies
Content And Storage Store in refrigerator (2°C to 8°C) and protect from light.
Labeling Method Click Chemistry
Chemical Reactivity Azide
10

Invitrogen™ SiteClick™ R-PE DIBO

Create bright, site-selectively labeled antibody conjugates with Invitrogen™ SiteClick™ DIBO RPE reagents. These reagents contain DIBO-modified R-Phycoerythrin (R-PE) for covalent attachment to azide-modified primary IgG antibodies prepared using SiteClick™ antibody-modification workflows.

Product Type Reactive Dye
11

Invitrogen™ SiteClick™ Qdot™ DIBO

Create bright, photostable, and site-selectively labeled antibody conjugates with Invitrogen™ SiteClick™ Qdot™ DIBO reactive nanocrystals. These reagents support covalent attachment to azide-modified IgG antibodies prepared using SiteClick™ or SureClick™ workflows.

Product Type Reactive Dye
14

Thermo Scientific™ Fluorescein-5-Maleimide

Activated derivatives of green-fluorescent fluorescein dye to label antibodies, proteins and other molecules for fluorescence imaging (ex 494; em 518).

15

Thermo Scientific™ FITC (5/6-fluorescein isothiocyanate), mixed isomer

Activated derivatives of green-fluorescent fluorescein dye to label antibodies, proteins and other molecules for fluorescence imaging (ex 494; em 518).

Content And Storage Store desiccated at -20°C, protect from moisture
Product Type FITC
Label or Dye FITC (Fluorescein)
Reactive Moiety Isothiocyanate
Solubility DMF (Dimethylformamide)
Emission 518
Excitation 494
Label Type Classic Dyes
Chemical Reactivity Amine
Product Line Pierce