NHS esters in Reactive groups
Primary or secondary amino groups are ubiquitous in biomolecules. They are present in proteins and peptides as ε-amino groups of lysines and N-terminal amino groups. Many natural and synthetic small molecules are amines, and DNAs with amino groups can be prepared by solid phase synthesis, and enzymatically.
Amino groups can be modified by acylation with various activated carbonyl compounds. Among these compounds, activated N-hydroxysuccinimide esters are most suitable for biolabeling and bioconjugation applications.
Compared to other activated esters, NHS derivatives possess good stability in aqueous environment. Optimal pH for the coupling of amines with NHS esters in aqueous buffers is 8.3-8.5. Labeling is also possible in organic solvents. Polar aprotic solents, such as DMF or DMSO, are preferred. One equivalent of tertiary amine base, such as triethylamine, or diisopropylethylamine (DIPEA) is necessary to achieve efficient amine acylation in non-aqueous solution.
AF 488 antibody labeling kit
Ready-to-use kit for labeling antibodies and other proteins with AF 488 dye via NHS ester chemistry. The kit contains all necessary chemicals and consumables.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1821-1rxn |
1 rxn
|
$69 | 1 days | |
| 1821-10rxn |
10 rxn
|
$450
|
1 days |
AF 594 antibody labeling kit
Ready-to-use kit for labeling antibodies and other proteins with AF 594 dye via NHS ester chemistry. The kit contains all necessary chemicals and consumables.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 6821-1rxn |
1 rxn
|
$69 | 1 days | |
| 6821-10rxn |
10 rxn
|
$450
|
1 days |
sulfo-Cyanine3 antibody labeling kit
Ready to use kit for the labeling of antibodies and other proteins with sulfo-Cyanine3 dye via NHS ester chemistry. The kit contains all necessary chemicals and consumables.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1321-1rxn |
1 rxn
|
$69 | 1 days | |
| 1321-10rxn |
10 rxn
|
$450
|
1 days |
sulfo-Cyanine5 antibody labeling kit
Ready-to-use kit for labeling antibodies and other proteins with sulfo-Cyanine5 dye via NHS ester chemistry. The kit contains all necessary chemicals and consumables.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 3321-1rxn |
1 rxn
|
$69 | 1 days | |
| 3321-10rxn |
10 rxn
|
$397 | 1 days |
sulfo-Cyanine5.5 antibody labeling kit
Ready-to-use kit for labeling antibodies and other proteins with sulfo-Cyanine5.5 dye via NHS ester chemistry. The kit contains all necessary chemicals and consumables.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 7321-1rxn |
1 rxn
|
$69 | 1 days | |
| 7321-10rxn |
10 rxn
|
$450
|
1 days |
sulfo-Cyanine7 antibody labeling kit
Ready-to-use kit for labeling antibodies and other proteins with sulfo-Cyanine7 dye via NHS ester chemistry. The kit contains all necessary chemicals and consumables.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 5321-1rxn |
1 rxn
|
$69 | 1 days | |
| 5321-10rxn |
10 rxn
|
$450
|
1 days |
sulfo-Cyanine7.5 antibody labeling kit
Ready-to-use kit for labeling antibodies and other proteins with sulfo-Cyanine7.5 dye via NHS ester chemistry. The kit contains all necessary chemicals and consumables.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 6321-1rxn |
1 rxn
|
$69 | 1 days | |
| 6321-10rxn |
10 rxn
|
$450
|
1 days |
(5,6)-FAM diacetate NHS ester
Amine-reactive fluorescein (FAM) derivative, a mixture of 5- and 6-isomers. The reagent becomes brightly green fluorescent once it is hydrolyzed while diffusing into cells. A fluorescent tracer.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2934-25mg | 25 mg | $160 | in stock | |
| 2934-50mg | 50 mg | $270 | in stock | |
| 2934-100mg | 100 mg |
$520
|
in stock |
3-Maleimidopropionic acid NHS-ester
Bifunctional crosslinker with an amine-reactive succinimidyl ester and a thiol-reactive maleimide group.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 3419-500mg | 500 mg | $110 | in stock |
AF 343 (Coumarin)-X-NHS ester
AF 343 (Coumarin) is a blue emitting dye that can serve as a FRET donor for fluorescein (FAM). This structure features a linker between Coumarin 343 fluorophore, and the functional group. It provides better solubility, and spatial separation between the dye, and the functional group.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 12620 | 1 mg | $110 | in stock | |
| 22620 | 5 mg | $210 | in stock | |
| 42620 | 25 mg |
$410
|
in stock | |
| 52620 | 50 mg |
$695
|
in stock | |
| 62620 | 100 mg |
$1190
|
in stock |
AF 430 NHS ester
AF 430 is a hydrophilic coumarin dye with emission in the green-yellow range. The NHS ester is used for the labeling of amine groups.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 10820 | 1 mg | $110 | in stock | |
| 20820 | 5 mg | $165 | in stock | |
| 40820 | 25 mg | $380 | in stock | |
| 50820 | 50 mg |
$695
|
in stock | |
| 60820 | 100 mg |
$1190
|
in stock |
AF 488 NHS ester
AF 488 NHS ester, a bright, photostable, and hydrophilic fluorescent dye for the green channel.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 11820 | 1 mg | $125 | in stock | |
| 21820 | 5 mg | $325 | in stock | |
| 31820 | 10 mg |
$480
|
in stock | |
| 41820 | 25 mg |
$950
|
in stock | |
| 51820 | 50 mg |
$1625
|
in stock | |
| 61820 | 100 mg |
$2090
|
in stock |
AF 532 NHS ester
NHS-ester of AF 532 dye for protein, peptide, and modified oligonucleotide labeling via reaction with amino groups.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1C820 | 1 mg | $140 | in stock | |
| 2C820 | 5 mg |
$450
|
in stock | |
| 4C820 | 25 mg |
$1460
|
in stock | |
| 5C820 | 50 mg |
$1890
|
in stock | |
| 6C820 | 100 mg |
$2640
|
in stock |
AF 555 NHS ester
AF 555 NHS ester, a bright, photostable, and hydrophilic fluorescent dye for the yellow channel.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1K820 | 1 mg | $140 | in stock | |
| 2K820 | 5 mg |
$450
|
in stock | |
| 4K820 | 25 mg |
$1460
|
in stock | |
| 5K820 | 50 mg |
$1890
|
in stock | |
| 6K820 | 100 mg |
$2640
|
in stock |
AF 568 NHS ester
AF 568 derivative for labeling proteins and other high- and low-molecular weight ligands with free amines.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 14820 | 1 mg | $125 | in stock | |
| 24820 | 5 mg | $325 | in stock | |
| 44820 | 25 mg |
$720
|
in stock | |
| 54820 | 50 mg |
$1325
|
in stock | |
| 64820 | 100 mg |
$2090
|
in stock |
AF 594 NHS ester
Red-fluorescent NHS-ester of AF 594 dye for labeling proteins, peptides, antibodies, and any molecules containing an -NH2 group. Pure 5-isomer
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2825-1mg | 1 mg | $125 | in stock | |
| 2825-5mg | 5 mg |
$425
|
in stock | |
| 2825-25mg | 25 mg |
$1240
|
in stock | |
| 2825-50mg | 50 mg |
$1890
|
in stock | |
| 2825-100mg | 100 mg |
$2640
|
in stock |
AF 647 NHS ester
Bright, water-soluble succinimide ester of AF 647 dye for protein and antibody labeling.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 16820 | 1 mg | $140 | 5 days | |
| 26820 | 5 mg |
$450
|
5 days | |
| 46820 | 25 mg |
$1460
|
in stock | |
| 56820 | 50 mg |
$1890
|
in stock | |
| 66820 | 100 mg |
$2640
|
in stock |
Alkyne-PEG2-NHS ester
Bifunctional hydrophilic linker with NHS ester and terminal alkyne functional group based on diethyleneglycol (PEG2).
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2219-1g | 1 g |
$450
|
in stock | |
| 2219-5g | 5 g |
$980
|
in stock |
Alkyne-PEG3-NHS ester
Bifunctional hydrophilic linker with NHS ester and terminal alkyne functional group based on triethyleneglycol (PEG3).
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2298-1g | 1 g |
$490
|
in stock | |
| 2298-5g | 5 g |
$980
|
in stock |
Alkyne-PEG4-NHS ester
Bifunctional hydrophilic linker with NHS ester and terminal alkyne functional group based on tetraethyleneglycol (PEG4).
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2409-100mg | 100 mg | $250 | in stock | |
| 2409-1g | 1 g |
$790
|
in stock |
AMCA NHS ester
NHS-ester of AMCA dye for protein, peptide, and modified oligonucleotide labeling via reaction with amino groups. AMCA is one of the brightest blue fluorescent dyes with large Stoke's shift and high resistance to photobleaching.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 3606-5mg | 5 mg | $110 | in stock | |
| 3606-25mg | 25 mg | $290 | in stock | |
| 3606-50mg | 50 mg |
$435
|
in stock | |
| 3606-100mg | 100 mg |
$595
|
in stock |
ATFB SE (N-Succinimidyl 4-Azidotetrafluorobenzoate)
N-Succinimidyl 4-Azidotetrafluorobenzoate (ATFB SE, ATFB-OSu) is a photo-activatable linker used as a versatile labeling agent for investigating biological receptors.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2574-250mg | 250 mg | $134 | in stock | |
| 2574-1g | 1 g |
$419
|
in stock |
ATT 550 NHS ester
Water-soluble ATT 550 succinimidyl ester for labeling various amine-containing molecules in the aqueous phase.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1C920 | 1 mg | $159 | in stock | |
| 2C920 | 5 mg |
$640
|
in stock | |
| 4C920 | 25 mg |
$1640
|
in stock | |
| 5C920 | 50 mg |
$2090
|
in stock | |
| 6C920 | 100 mg |
$2840
|
in stock |
ATT 647N NHS ester
ATT 647N succinimidyl ester for labeling various amine-containing molecules.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1E920 | 1 mg | $199 | in stock | |
| 2E920 | 5 mg |
$746
|
in stock |
Azide-PEG6-NHS ester
A hydrophilic bifunctional linker with azide and NHS ester function groups flanking PEG6 (hexaethylene glycol).
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 3692-250mg | 250 mg | $325 | in stock | |
| 3692-1g | 1 g |
$539
|
in stock |
Azidobutyric acid NHS ester
Activated NHS ester for azido-labeling of peptides and proteins.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 53720 | 50 mg | $110 | in stock | |
| 63720 | 100 mg | $210 | in stock | |
| 73720 | 1 g |
$950
|
in stock | |
| 83720 | 5 g | please inquire | in stock |
BDP 564/570 NHS ester
Lypohilic borodipyrromethene dye with orange emission for the labeling of primary and secondary amine groups.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1H420 | 1 mg | $125 | in stock | |
| 2H420 | 5 mg | $325 | in stock | |
| 4H420 | 25 mg |
$510
|
in stock | |
| 5H420 | 50 mg |
$895
|
in stock | |
| 6H420 | 100 mg |
$1490
|
in stock |
BDP® 558/568 NHS ester
BDP 558/568 is a fluorophore for the yellow region of the spectrum. Like other BDP dyes, this fluorophore has high fluorescence quantum yield, brightness, and photostability.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 17420 | 1 mg | $125 | in stock | |
| 27420 | 5 mg | $260 | in stock | |
| 47420 | 25 mg |
$510
|
in stock | |
| 57420 | 50 mg |
$895
|
in stock | |
| 67420 | 100 mg |
$1490
|
in stock |
BDP® 576/589 NHS ester
BDP 576/589 NHS ester is a bright hydrophobic dye with emission in the orange spectrum range. It can be used in fluorescence anisotropy assays.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1G420 | 1 mg | $125 | in stock | |
| 2G420 | 5 mg | $260 | in stock | |
| 4G420 | 25 mg |
$510
|
in stock | |
| 5G420 | 50 mg |
$895
|
in stock | |
| 6G420 | 100 mg |
$1490
|
in stock |
BDP® 581/591 NHS ester
NHS ester derivative of BDP 581/591 borondipyrromethene fluorophore for the labeling of proteins, peptides, and other biomolecules. The dye is useful for fluorescence polarization and two-photon experiments, and as a ROS probe.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 16420 | 1 mg | $125 | in stock | |
| 26420 | 5 mg | $260 | 5 days | |
| 46420 | 25 mg |
$510
|
in stock | |
| 56420 | 50 mg |
$895
|
5 days | |
| 66420 | 100 mg |
$1490
|
5 days |
BDP® 630/650-X-NHS ester
BDP 630/650 is a borondipyrromethene fluorophore tuned to Cyanine5 excitation and emission channels. The dye is bright and highly photostable. It is useful for fluorescence polarization assays. This is an amine-reactive NHS ester derivative.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 15420 | 1 mg | $125 | in stock | |
| 25420 | 5 mg | $260 | in stock | |
| 45420 | 25 mg |
$510
|
in stock | |
| 55420 | 50 mg |
$895
|
in stock | |
| 65420 | 100 mg |
$1490
|
in stock |
BDP® 650/665-X-NHS ester
Amine-reactive of BDP 650/665, a borondipyrromethene dye for Cy5 channel possessing a high molar extinction coefficient and a good emission quantum yield.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1E420 | 1 mg | $125 | in stock | |
| 2E420 | 5 mg | $260 | in stock | |
| 4E420 | 25 mg |
$510
|
in stock | |
| 5E420 | 50 mg |
$895
|
in stock | |
| 6E420 | 100 mg |
$1490
|
in stock |
BDP® FL NHS ester
Amino-reactive BDP FL, a very bright and photostable dye for fluorescein channel.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 11420 | 1 mg |
$125
$98
|
in stock | |
| 21420 | 5 mg |
$260
$175
|
in stock | |
| 41420 | 25 mg |
$485
|
in stock | |
| 51420 | 50 mg |
$824
|
in stock | |
| 61420 | 100 mg |
$1380
|
in stock |
BDP® R6G NHS ester
BDP R6G is a borondipyrromethene dye which has absorption and emission spectra similar to R6G.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 14420 | 1 mg | $125 | in stock | |
| 24420 | 5 mg | $260 | in stock | |
| 44420 | 25 mg |
$510
|
in stock | |
| 54420 | 50 mg |
$895
|
in stock | |
| 64420 | 100 mg |
$1490
|
in stock |
BDP® TMR NHS ester
Amine reactive NHS ester of BDP TMR, bright borondipyrromethene dye for TAMRA channel especially suitable for fluorescence polarization assays.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 12420 | 1 mg | $125 | in stock | |
| 22420 | 5 mg | $260 | in stock | |
| 42420 | 25 mg |
$510
|
in stock | |
| 52420 | 50 mg |
$895
|
in stock | |
| 62420 | 100 mg |
$1490
|
in stock |
BDP® TMR-X-NHS ester
Amine reactive NHS ester of BDP TMR, bright borondipyrromethene dye for TAMRA channel especially suitable for fluorescence polarization assays. This compound contains an aminohexanoic acid (C6) linker between the dye and the functional group.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1F420 | 1 mg | $125 | in stock | |
| 2F420 | 5 mg | $260 | in stock | |
| 4F420 | 25 mg |
$510
|
in stock | |
| 5F420 | 50 mg |
$895
|
in stock | |
| 6F420 | 100 mg |
$1490
|
in stock |
BDP® TR NHS ester
BDP TR is a borondipyrromethene dye. A bright and photostable fluorophore with high quantum yield.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| NO items of this product available in stock but you can submit request for bulk. | ||||
BDP® TR-X-NHS ester
BDP TR-X-NHS ester is a derivative of BDP TR containing a long linker based on aminohexanoic acid (C6). The dye has absorption and emission close to ROX. The NHS ester function can be used to conjugate proteins and peptides.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1D420 | 1 mg | $125 | in stock | |
| 2D420 | 5 mg | $325 | in stock | |
| 4D420 | 25 mg |
$510
|
in stock | |
| 5D420 | 50 mg |
$895
|
in stock | |
| 6D420 | 100 mg |
$1490
|
in stock |
Biotin-PEG4-NHS ester
PEG4-containing activated ester for simple and efficient biotin labeling of antibodies, proteins, and other primary amine-containing biomolecules.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2893-100mg | 100 mg | $145 | in stock | |
| 2893-1g | 1 g |
$590
|
in stock |
Biotin-X-NHS ester
Biotin derivative with C6-spacer to reduce steric effect when binding amino acids, peptides, or proteins by reacting with primary amines.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2551-100mg | 100 mg | $117 | in stock | |
| 2551-1g | 1 g |
$450
|
in stock |
Biotin-XX-NHS ester
Biotin derivative with long spacer to reduce steric effect when binding amino acids, peptides, or proteins by reacting with primary amines.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2897-100mg | 100 mg | $225 | in stock | |
| 2897-1g | 1 g |
$670
|
in stock |
Cyanine2 NHS ester minimal dye
Cyanine2 NHS ester minimal dye for protein labeling, an equivalent of Cy2 NHS ester minimal dye.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1A041 | 5 nmol | $110 | in stock | |
| 2A041 | 10 nmol | $140 | in stock | |
| 3A041 | 25 nmol | $265 | in stock |
Cyanine3 NHS ester
Amine-reactive Cyanine3 dye NHS ester for the labeling of amino-groups.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 11020 | 1 mg | $91 | in stock | |
| 21020 | 5 mg | $119 | in stock | |
| 41020 | 25 mg | $380 | in stock | |
| 51020 | 50 mg |
$670
|
in stock | |
| 61020 | 100 mg |
$1150
|
in stock | |
| 81020 | 1 g | please inquire | in stock |
Cyanine3 NHS ester minimal dye
Cyanine3 minimal dye for protein labeling, and analog of Cy3 minimal dye.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1B041 | 5 nmol | $110 | in stock | |
| 2B041 | 10 nmol | $175 | in stock | |
| 3B041 | 25 nmol | $265 | in stock |
Cyanine3.5 NHS ester
Cyanine3.5 dye NHS ester derivative the labeling of amino-groups in biomolecules.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 12020 | 1 mg | $125 | in stock | |
| 22020 | 5 mg | $260 | in stock | |
| 42020 | 25 mg |
$510
|
in stock | |
| 52020 | 50 mg |
$895
|
in stock | |
| 62020 | 100 mg |
$1490
|
in stock |
Cyanine3B NHS ester
Cyanine3B NHS ester is a reactive dye with significantly increased fluorescence quantum yield and photostability for the specific labeling of amino-groups in biomolecules.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 19320 | 1 mg | $140 | in stock | |
| 29320 | 5 mg | $340 | in stock | |
| 49320 | 25 mg |
$990
|
in stock | |
| 59320 | 50 mg |
$1690
|
in stock | |
| 69320 | 100 mg |
$3100
|
in stock |
Cyanine5 NHS ester
Amine-reactive Cyanine5 activated ester for the labeling of proteins, peptides, and other molecules.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 13020 | 1 mg | $87 | in stock | |
| 23020 | 5 mg | $117 | in stock | |
| 43020 | 25 mg | $337 | in stock | |
| 53020 | 50 mg |
$550
|
in stock | |
| 63020 | 100 mg |
$870
|
in stock | |
| 83020 | 1 g | please inquire | 12 days |
Cyanine5 NHS ester minimal dye
Cy5 NHS ester minimal dye for protein labeling, an analog of Cy5 minimal dye.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1C041 | 5 nmol | $110 | in stock | |
| 2C041 | 10 nmol | $175 | in stock | |
| 3C041 | 25 nmol | $265 | in stock |
Cyanine5.5 NHS ester
Cyanine5.5 NHS is far-red / near-infrared amine-reactive dye.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 17020 | 1 mg | $125 | in stock | |
| 27020 | 5 mg | $260 | in stock | |
| 47020 | 25 mg |
$510
|
in stock | |
| 57020 | 50 mg |
$895
|
in stock | |
| 67020 | 100 mg |
$1490
|
in stock |
Cyanine7 NHS ester
Amine reactive NHS ester of near infrared fluorescent dye, an improved analog of Cy7®.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 15020 | 1 mg | $125 | in stock | |
| 25020 | 5 mg | $260 | in stock | |
| 45020 | 25 mg |
$510
|
in stock | |
| 55020 | 50 mg |
$895
|
in stock | |
| 65020 | 100 mg |
$1490
|
in stock |
Cyanine7.5 NHS ester
Amine reactive NHS ester of NIR fluorescent dye Cyanine7.5 .
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 16020 | 1 mg | $125 | in stock | |
| 26020 | 5 mg | $260 | in stock | |
| 46020 | 25 mg |
$510
|
in stock | |
| 56020 | 50 mg |
$895
|
in stock | |
| 66020 | 100 mg |
$1490
|
in stock |
DBCO-NHS ester
Azodibenzocyclooctyne (DBCO, ADIBO) reagent for strain-promoted copper-free click chemistry (SPAAC). The reagent contains an NHS ester function for the attachment of the cyclooctyne to various molecules.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 34720 | 10 mg | $80 | in stock | |
| 44720 | 25 mg | $110 | in stock | |
| 54720 | 50 mg | $135 | in stock | |
| 64720 | 100 mg |
$210
$178
|
in stock | |
| 94720 | 1 g |
$1000
$970
|
in stock | |
| K4720 | 5 g |
$3570
$2990
|
in stock |
DBCO-PEG6-NHS ester
A heterobifunctional linker with DBCO and NHS ester function groups flanking PEG6 (hexaethylene glycol).
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 3664-50mg | 50 mg | $247 | in stock | |
| 3664-100mg | 100 mg |
$449
|
in stock | |
| 3664-1g | 1 g |
$3490
|
5 days |
Disuccinimidyl glutarate (DSG)
Homobifunctional crosslinker with two NHS ester groups at each end of a short 5-atom (7.7 angstrom) spacer.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 4018-100mg | 100 mg | $95 | in stock | |
| 4018-1g | 1 g |
$410
|
in stock |
DOTA-NHS ester
Bifunctional linker with DOTA chelating and amine-reactive NHS ester groups for bioconjugation.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 4245-100mg | 100 mg | $125 | in stock | |
| 4245-500mg | 500 mg |
$525
|
in stock | |
| 4245-1g | 1 g |
$990
|
in stock |
DOTA-tris-tBu mono-NHS ester
Bifunctional linker with DOTA chelating and amine-reactive NHS ester groups for bioconjugation.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2782-100mg | 100 mg | $110 | in stock | |
| 2782-500mg | 500 mg |
$485
|
in stock | |
| 2782-1g | 1 g |
$895
|
in stock |
DusQ 1 NHS ester
Functionalized DusQ 1 quencher derivative with quenching range from 480 - 580 nm for labeling of amine-containing molecules.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 41D20 | 25 mg | $315 | in stock | |
| 51D20 | 50 mg |
$580
|
in stock | |
| 61D20 | 100 mg |
$885
|
in stock |
DusQ® 2 NHS ester
DusQ® 2 dark quencher with a quenching range from 560 - 670 nm with primary amine reactivity for synthesis of FRET probes. This NHS ester can be coupled to various molecules bearing amino groups.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 42D20 | 25 mg | $315 | in stock | |
| 52D20 | 50 mg |
$580
|
in stock | |
| 62D20 | 100 mg |
$885
|
in stock |
DusQ® 21 NHS ester
Amino-reactive NHS ester with quencher for the conjugation with amines-containing molecules, DusQ® 21 quenching range 590 - 720 nm.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 48D20 | 25 mg | $315 | in stock | |
| 68D20 | 100 mg |
$885
|
in stock |
DusQ® 3 NHS ester
Amino-reactive NHS ester for the labeling with far-red quencher DusQ® 3.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 43D20 | 25 mg | $315 | in stock | |
| 53D20 | 50 mg |
$580
|
in stock | |
| 63D20 | 100 mg |
$885
|
in stock |
FAM NHS ester, 6-isomer
Activated N-hydroxysuccinimide ester of fluorescein (FAM), pure 6-isomer.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 25120 | 5 mg | $110 | in stock | |
| 45120 | 25 mg | $145 | in stock | |
| 55120 | 50 mg | $260 | in stock | |
| 65120 | 100 mg |
$470
|
5 days | |
| 85120 | 1 g | please inquire | in stock | |
| 95120 | 5 g | please inquire | in stock |
HEX NHS ester, 6-isomer
NHS-ester of HEX dye for proteins, peptides, and modified oligonucleotides labeling via reaction with amino groups.
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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2B220 | 5 mg | $175 | in stock |
Hexynoic acid NHS ester
Hexynoic acid NHS ester for the labeling of biomolecules with alkyne group for copper-catalyzed click chemistry.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 41720 | 25 mg | $95 | in stock | |
| 51720 | 50 mg | $180 | in stock | |
| 61720 | 100 mg | $290 | in stock | |
| 91720 | 1 g | please inquire | in stock |
JOE NHS ester, 5-isomer
JOE is a fluorescent dye with emission in the yellow part of the spectrum. This derivative is an activated NHS ester for conjugation with amines.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 11120 | 1 mg | $110 | in stock | |
| 21120 | 5 mg | $210 | in stock | |
| 41120 | 25 mg |
$410
|
in stock | |
| 51120 | 50 mg |
$695
|
in stock | |
| 61120 | 100 mg |
$1190
|
in stock |
Pyrenebutyric acid NHS ester
Pyrene NHS ester for the labeling of biomolecules with pyrene residue. Pyrene is a fluorescent proximity probe which forms excimers, and it is also an anchor group for graphite immobilization.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 63520 | 100 mg | $110 | in stock |
R6G NHS ester, 5-isomer
R6G (rhodamine 6G) NHS ester, pure 5-isomer. This dye is often used for the labeling of oligonucleotides for qPCR.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 14220 | 1 mg | $110 | in stock | |
| 24220 | 5 mg | $210 | in stock | |
| 44220 | 25 mg |
$410
|
in stock | |
| 54220 | 50 mg |
$695
|
in stock | |
| 64220 | 100 mg |
$1190
|
in stock |
ROX NHS ester, 5-isomer
Activated NHS ester of ROX (rhodamine X or rhodamine 101), pure 5-isomer, for the labeling of amine groups of biomolecules.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 11220 | 1 mg | $110 | in stock | |
| 21220 | 5 mg | $210 | in stock | |
| 41220 | 25 mg |
$410
|
in stock | |
| 51220 | 50 mg |
$695
|
in stock | |
| 61220 | 100 mg |
$1190
|
in stock |
ROX NHS ester, 6-isomer
Pure 6-isomer of ROX (Rhodamine X, R101) NHS-ester for amine labeling.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 12220 | 1 mg | $110 | in stock | |
| 22220 | 5 mg | $210 | in stock | |
| 42220 | 25 mg |
$410
|
in stock | |
| 52220 | 50 mg |
$695
|
in stock | |
| 62220 | 100 mg |
$1190
|
in stock |
sulfo-Cyanine3 NHS ester
Water soluble sulfo-Cyanine3 SE activated ester for amino-biomolecule labeling.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 11320 | 1 mg | $91 | in stock | |
| 21320 | 5 mg | $119 | in stock | |
| 41320 | 25 mg | $395 | in stock | |
| 51320 | 50 mg |
$729
|
in stock | |
| 61320 | 100 mg |
$1290
|
in stock |
sulfo-Cyanine3.5 NHS ester
Amine-reactive activated ester of water-soluble, sulfonated sulfo-Cyanine3.5 dye.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 12320 | 1 mg | $125 | in stock | |
| 22320 | 5 mg | $325 | in stock | |
| 42320 | 25 mg |
$850
|
in stock | |
| 52320 | 50 mg |
$1490
|
in stock | |
| 62320 | 100 mg |
$1990
|
in stock |
sulfo-Cyanine5 alkyne NHS ester
Bifunctional derivative of sulfo-Cyanine5 dye containing reactive groups of terminal alkyne and NHS ester.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| NO items of this product available in stock but you can submit request for bulk. | ||||
sulfo-Cyanine5 bis-NHS ester
Water soluble amine reactive Cyanine5 dye with two NHS ester groups.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 133D0 | 1 mg | $125 | in stock | |
| 233D0 | 5 mg | $325 | in stock | |
| 433D0 | 25 mg |
$850
|
in stock | |
| 533D0 | 50 mg |
$1490
|
in stock | |
| 633D0 | 100 mg |
$1990
|
in stock |
sulfo-Cyanine5 NHS ester
Water-soluble sulfo-Cyanine5 succinimidyl ester for labeling various amine-containing molecules in the aqueous phase.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 13320 | 1 mg | $91 | in stock | |
| 23320 | 5 mg | $119 | in stock | |
| 43320 | 25 mg | $345 | in stock | |
| 53320 | 50 mg |
$557
|
in stock | |
| 63320 | 100 mg |
$890
|
in stock |
sulfo-Cyanine5.5 NHS ester
Water soluble, sulfonated, far-red sulfo-Cyanine5.5 dye in the form of NHS ester.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 17320 | 1 mg | $125 | in stock | |
| 27320 | 5 mg | $325 | in stock | |
| 47320 | 25 mg |
$850
|
in stock | |
| 57320 | 50 mg |
$1490
|
in stock | |
| 67320 | 100 mg |
$1990
|
in stock |
sulfo-Cyanine7 bis-NHS ester
sulfo-Cyanine7 bis-NHS ester is a bifunctional derivative of water-soluble near-infrared sulfo-Cyanine7. It contains two activated ester functional groups.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 153D0 | 1 mg | $125 | in stock | |
| 253D0 | 5 mg | $325 | in stock | |
| 453D0 | 25 mg |
$850
|
in stock | |
| 553D0 | 50 mg |
$1490
|
in stock | |
| 653D0 | 100 mg |
$1990
|
in stock |
sulfo-Cyanine7 NHS ester
sulfo-Cyanine7 NHS ester is a water-soluble, near-infrared, amine-reactive dye.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 15320 | 1 mg | $125 | in stock | |
| 25320 | 5 mg | $325 | in stock | |
| 45320 | 25 mg |
$850
|
in stock | |
| 55320 | 50 mg |
$1490
|
in stock | |
| 65320 | 100 mg |
$1990
|
in stock |
sulfo-Cyanine7.5 NHS ester
A water-soluble near-infrared emitting dye for in vivo imaging applications. sulfo-Cyanine7.5 is an analog of indocyanine green (ICG) possessing higher emission quantum yield and a linker arm.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 16320 | 1 mg | $125 | in stock | |
| 26320 | 5 mg | $325 | in stock | |
| 46320 | 25 mg |
$850
|
in stock | |
| 56320 | 50 mg |
$1490
|
in stock | |
| 66320 | 100 mg |
$1990
|
in stock |
TAMRA NHS ester, 5-isomer
Amine-reactive, activated N-hydroxysuccinimidyl ester of TAMRA dye for the labeling of amine groups of proteins, peptides, and amino-oligonucleotides. Pure 5-isomer.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 27120 | 5 mg | $210 | in stock | |
| 47120 | 25 mg | $350 | in stock | |
| 57120 | 50 mg |
$595
|
in stock | |
| 67120 | 100 mg |
$790
|
in stock |
TAMRA NHS ester, 6-isomer
NHS-ester of TAMRA dye for proteins, peptides, and modified oligonucleotides labeling via reaction with amino groups. Pure 6-isomer.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 18120 | 1 mg | $110 | in stock | |
| 28120 | 5 mg | $210 | in stock | |
| 48120 | 25 mg | $350 | in stock | |
| 58120 | 50 mg |
$595
|
in stock | |
| 68120 | 100 mg |
$790
|
5 days |
TCO-PEG4-NHS ester (axial isomer)
A heterobifunctional linker with trans-cyclooctene and NHS ester groups flanking PEG4 (tetraethylene glycol) for labeling of antibodies, proteins, and other primary amine-containing biomolecules.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 3056-10mg | 10 mg | $145 | in stock | |
| 3056-25mg | 25 mg | $225 | in stock | |
| 3056-100mg | 100 mg |
$550
|
in stock |
Thiazole Orange NHS ester
Thiazole Orange NHS ester for labeling biomolecules (peptides, proteins, amino-DNA, etc.). Thiazole orange is a cyanine dye that is essentially dark in solution but has a bright fluorescence in double-stranded DNA and RNA.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2183-5mg | 5 mg | $60 | in stock |
TR-X-NHS ester, 5-isomer
TR is a red-emitting fluorescent dye based on sulforhodamine scaffold, an amine-reactive NHS ester.
Show pricing
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 1V220 | 1 mg | $125 | in stock | |
| 2V220 | 5 mg | $325 | in stock | |
| 4V220 | 25 mg |
$510
|
in stock | |
| 5V220 | 50 mg |
$895
|
in stock | |
| 6V220 | 100 mg |
$1490
|
in stock |
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