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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
6

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

Biotinylate protein amines (e.g., lysines) with this long-chain (22.4A), NHS-ester biotinylation reagent containing a membrane permeable spacer arm for intracellular labeling.

9

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
10
Promotions Available

Bolton-Hunter Reagent, Thermo Scientific Chemicals

CAS: 34071-95-9 Molecular Formula: C13H13NO5 Synonym: N-Succinimidyl-3-(4-hydroxyphenyl)propionate; Rudinger reagent

CAS 34071-95-9
Synonym N-Succinimidyl-3-(4-hydroxyphenyl)propionate; Rudinger reagent
Molecular Formula C13H13NO5
11

Invitrogen™ Dabcyl, SE, 4-((4-(dimethylamino)phenyl)azo)benzoic Acid, Succinimidyl Ester  DFS Item

4-((4-(dimethylamino)phenyl)azo)benzoic acid, succinimidyl ester (dabcyl, SE)

13

Invitrogen™ 5-SFX (6-(Fluorescein-5-Carboxamido) Hexanoic Acid, Succinimidyl Ester), single isomer  DFS Item

5-SFX (6-(Fluorescein-5-Carboxamido) Hexanoic Acid, Succinimidyl Ester), single isomer

14

Invitrogen™ Oregon Green™ 488 Carboxylic Acid, Succinimidyl Ester, 6-isomer  DFS Item

Oregon Green™ 488 Carboxylic Acid, Succinimidyl Ester, 6-isomer

15

Invitrogen™ 5-ROX, SE (5-Carboxy-X-Rhodamine, Succinimidyl Ester), single isomer  DFS Item

5-ROX, SE (5-Carboxy-X-Rhodamine, Succinimidyl Ester), single isomer