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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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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
8

Invitrogen™ BODIPY™ FL-C5 NHS Ester (Succinimidyl Ester)  DFS Item

BODIPY™ FL-C5 dye is bright, green fluorescent dye with similar excitation and emission to fluorescein (FITC) or Alexa Fluor™ 488 dye.

9

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).

10

Molecular Probes™ Tetramethylrhodamine (TAMRA) Azide (Tetramethylrhodamine 5-Carboxamido-(6-Azidohexanyl)), 5-isomer  DFS Item

Tetramethylrhodamine (TAMRA) Azide (Tetramethylrhodamine 5-Carboxamido-(6-Azidohexanyl)), 5-isomer

11

Invitrogen™ Alexa Fluor™ 430 NHS Ester (Succinimidyl Ester)  DFS Item

Used for stable signal generation in imaging and flow cytometry, Alexa Fluor™ 430 dye is water soluble and pH-insensitive from pH 4 to pH 10.

12

Invitrogen™ Click-iT™ sDIBO Alkynes for copper-free click chemistry
GREENER_CHOICE

Experience copper-free 'click chemistry' with Click-IT™ Alexa Fluor™, and sDIBO Alkyne reagents, which are ideal for surface labeling of live cells and minimize damage to enzymes and fluorescent proteins.

Shipping Condition Dry Ice
Labeling Target Azide
Labeling Method Click Chemistry
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™ 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.

15

Thermo Scientific™ EZ-Link™ Amine-PEG3-Biotin

Biotinylate proteins or surfaces using EDC or other amine-reactive crosslinkers with a mid-length (22.9A) biotinylation reagent containing a 3-unit polyethylene glycol spacer.