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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

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
2

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.

3

Thermo Scientific™ DyLight™ 650-4xPEG NHS Ester

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

6

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

7

Invitrogen™ Alexa Fluor™ 555 NHS Ester (Succinimidyl Ester)  DFS Item

Alexa Fluor™ 555 is a bright orange dye. Used for stable signal generation in imaging and flow cytometry, Alexa Fluor™ 555 dye is water soluble and pH-insensitive from pH 4 to pH 10.

Shipping Condition Room Temperature
Product Type Dye
Emission 572 nm
Excitation 555 nm
Product Line Alexa Fluor
8

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).

9

Invitrogen™ Alexa Fluor™ 750 NHS Ester (Succinimidyl Ester)  DFS Item

Alexa Fluor™ 750 is a bright and photostable near-IR dye that is spectrally similar to Cy7.

Shipping Condition Room Temperature
Product Type Dye
Emission 782 nm
Excitation 753 nm
Product Line Alexa Fluor
10

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

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

12

Molecular Probes™ Alexa Fluor™ Carboxylic Acid, tris(triethylammonium) salts  DFS Item

Alexa Fluor Carboxylic Acid tris(triethylammonium) salts are non-reactive forms of the Alexa Fluor dye that can be used as a reference standard for dye-conjugates. Choose from ten different Alexa Fluor free acid dyes that span the spectrum, from 350 to 750 nm, to meet your research needs.

Content And Storage Store in freezer (-5 to -30°C). Protect from light.
Reactive Moiety Free acid
Quantity 5 mg
Label Type Alexa Fluor
Product Line Alexa Fluor
13

Molecular Probes™ Alexa Fluor™ 610-X NHS Ester (Succinimidyl Ester)  DFS Item

Used for stable signal generation in imaging and flow cytometry, Alexa Fluor™ 610-X dye is water soluble and pH-insensitive from pH 4 to pH 10.

14

Invitrogen™ Alexa Fluor™ 647 Hydroxylamine  DFS Item

Alexa Fluor™ 647 Hydroxlamine is useful as a cell tracer and as a reactive dye for labeling aldehydes or ketones in polysaccharides or glycoproteins.

15

Invitrogen™ BODIPY™ FL Iodoacetamide (BODIPY™ FL C1-IA, N-(4,4-Difluoro-5,7-Dimethyl-4-Bora-3a,4a-Diaza-s-Indacene-3-yl)Methyl)Iodoacetamide)  DFS Item

BODIPY™ FL Iodoacetamide (BODIPY™ FL C1-IA, N-(4,4-Difluoro-5,7-Dimethyl-4-Bora-3a,4a-Diaza-s-Indacene-3-yl)Methyl)Iodoacetamide)