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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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2

Thermo Scientific™ DyLight™ 488 Maleimide

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

4

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.

5

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
6

Thermo Scientific™ Pierce™ Premium Grade Sulfo NHS-SS-Biotin

Biotin-label antibodies or other proteins and biomolecules in applications where product integrity and risk minimization are paramount with Thermo Scientific™ Pierce™ Premium Grade Sulfo-NHS-SS-Biotin, a high-quality formulation of this amine-reactive, cleavable biotinylation reagent.

Cell Permeability Cell-Impermeant
Product Type Sulfo NHS-SS-Biotin
Spacer Mid-length, Cleavable
Label or Dye Biotin
Solubility DMF (Dimethylformamide),DMSO (Dimethylsulfoxide),Water
Reactive Moiety Active Ester, Succinimidyl Ester, Sulfo-NHS Ester
Label Type Biotin & Analogs
Chemical Reactivity Amine
Product Line Pierce
7

Invitrogen™ Alexa Fluor™ 633 NHS Ester (Succinimidyl Ester)  DFS Item

Alexa Fluor™ 633 is a bright and photostable far-red dye with excitation ideally suited to the 633 nm laser line.

Product Type NHS Ester (Succinimidyl Ester)
Label or Dye Alexa Fluor™ 633
Emission 639 nm
Excitation 621 nm
8

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
11

Invitrogen™ 5-ROX (5-Carboxy-X-Rhodamine, Triethylammonium Salt), single isomer  DFS Item

5-ROX (5-Carboxy-X-Rhodamine, Triethylammonium Salt), single isomer

12

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.

13

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).

14

Thermo Scientific™ EZ-Link™ Amine-PEG4-Desthiobiotin, No-Weigh™ Format

Thermo Scientific™ EZ-Link™ Amine-PEG4-Desthiobiotin No-Weigh™ Format is a pegylated amine compound whose biotin-like group is elutable from streptavidin, making it ideal for carbodiimide (EDC) conjugation to carboxylates for labeling and purification.