Protein Labeling Reagents

Invitrogen™ Rhodamine Red™-X, Succinimidyl Ester, 5-isomer  

Rhodamine Red™-X, Succinimidyl Ester, 5-isomer

Molecular Probes™ pHrodo™ Green STP Ester  

pHrodo™ Green STP Ester

Invitrogen™ Alexa Fluor™ 594 Hydrazide, for microinjection  

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

Invitrogen™ Alexa Fluor™ 488 C₅ Maleimide  

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

Invitrogen™ Alexa Fluor™ Plus Amine-Reactive Dyes

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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.

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

Invitrogen™ Click-IT™ O-GlcNAc Enzymatic Labeling System  

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For in-vitro modification of O-GlcNAc modified proteins

Invitrogen™ Click-IT™ Biotin Protein Analysis Detection Kit  

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Identify and characterize glycoproteins by Western blot

Thermo Scientific™ EZ-Link™ Iodoacetyl-PEG2-Biotin

Biotinylate reduced cysteines (-SH groups) at high pH with this haloacetyl-activated, sulfhydryl-reactive biotinylation reagent containing polyethylene glycol for solubility.

Thermo Scientific™ EZ-Link™ Hydrazide-PEG4-Biotin

Biotinylate glycoproteins (aldehydes of oxidized sugars) with this mid-length (31.3A), pegylated biotinylation reagent containing a 4-unit PEG spacer for solubility.

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

Biotinylate protein amines with this cleavable, mid-length (24.3A), NHS-ester biotinylation reagent containing a reducible disulfide bond in the membrane-permeable spacer arm.

Thermo Scientific™ EZ-Link™ NHS-SS-PEG4-Biotin

Biotinylate protein amines with this cleavable, long (37.9A) NHS-ester biotinylation reagent containing a reducible disulfide bond in the pegylated, water-soluble spacer arm.

Thermo Scientific™ EZ-Link™ BMCC-Biotin

Biotinylate reduced cysteines (-SH groups) with a maleimide-activated, sulfhydryl-reactive biotinylation reagent containing a stabilizing cyclohexane group in the spacer arm.

Thermo Scientific™ EZ-Link™ Alkoxyamine-PEG4-Biotin

Biotinylate glycoproteins (aldehydes of oxidized sugars) with a mid-length (27.0A), pegylated biotinylation reagent containing a 4-unit PEG spacer for length and solubility.

Thermo Scientific™ DyLight™ 680 NHS Ester

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