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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 298 results
3

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.

4

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™ 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
6

Invitrogen™ SiteClick™ sDIBO Alkyne Kits for Antibody Labeling  DFS Item

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
7

Atto 565 NHS Ester BioReagent, Suitable for Fluorescence, 70% (Coupling to Amines), MilliporeSigma™ Supelco™

Fluorescence of bioconjugates; employed in fluorescence resonance energy transfer, FRET, experiments.

Content And Storage -20°C
8

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
10

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

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

11

Molecular Probes™ Alexa Fluor™ 488 Azide (Alexa Fluor™ 488 5-Carboxamido-(6-Azidohexanyl), Bis(Triethylammonium Salt)), 5-isomer  DFS Item

The green-fluorescent Alexa Fluor™ 488 azide is reactive with terminal alkynes via a copper-catalyzed click reaction.

12

Molecular Probes™ Alexa Fluor™ 647 Azide, Triethylammonium Salt  DFS Item

The far red-fluorescent Alexa Fluor™ 647 azide is reactive with terminal alkynes via a copper-catalyzed click reaction.

13

Invitrogen™ Alexa Fluor™ 350 NHS Ester (Succinimidyl Ester)  DFS Item

Used for stable signal generation in imaging and flow cytometry, Alexa Fluor™ 350 dye is water soluble and pH-insensitive from pH 4 to pH 10.

14

Invitrogen™ Click-IT™ O-GlcNAc Enzymatic Labeling System  DFS Item
GREENER_CHOICE

For in-vitro modification of O-GlcNAc modified proteins

15

Invitrogen™ 4-Acetamido-4'-Maleimidylstilbene-2,2'-Disulfonic Acid, Disodium Salt  DFS Item

4-acetamido-4'-maleimidylstilbene-2,2'-disulfonic acid, disodium salt