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.

NHS ester coupling chemistry

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
1821-10rxn
10 rxn
$450.00 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
6821-10rxn
10 rxn
$450.00 21 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
1321-10rxn
10 rxn
$450.00 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
3321-10rxn
10 rxn
$400.00 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
7321-10rxn
10 rxn
$450.00 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
5321-10rxn
10 rxn
$450.00 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.
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Cat. # Quantity Price Lead time
6321-10rxn
10 rxn
$450.00 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
2934-25mg 25 mg $160.00 in stock
2934-50mg 50 mg $270.00 in stock
2934-100mg 100 mg $520.00 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
3419-500mg 500 mg $110.00 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
12620 1 mg $110.00 in stock
22620 5 mg $210.00 in stock
42620 25 mg $410.00 in stock
52620 50 mg $695.00 in stock
62620 100 mg $1190.00 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
10820 1 mg $110.00 in stock
20820 5 mg $165.00 in stock
40820 25 mg $380.00 in stock
50820 50 mg $695.00 in stock
60820 100 mg $1190.00 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
11820 1 mg $125.00 in stock
21820 5 mg $325.00 in stock
31820 10 mg $480.00 in stock
41820 25 mg $950.00 in stock
51820 50 mg $1625.00 5 days
61820 100 mg $2090.00 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
1C820 1 mg $140.00 in stock
2C820 5 mg $450.00 in stock
4C820 25 mg $1460.00 in stock
5C820 50 mg $1890.00 in stock
6C820 100 mg $2640.00 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
1K820 1 mg $140.00 in stock
2K820 5 mg $450.00 in stock
4K820 25 mg $1460.00 in stock
5K820 50 mg $1890.00 in stock
6K820 100 mg $2640.00 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
14820 1 mg $125.00 in stock
24820 5 mg $325.00 in stock
44820 25 mg $720.00 in stock
54820 50 mg $1325.00 in stock
64820 100 mg $2090.00 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
2825-1mg 1 mg $125.00 in stock
2825-5mg 5 mg $425.00 5 days
2825-25mg 25 mg $1240.00 in stock
2825-50mg 50 mg $1890.00 in stock
2825-100mg 100 mg $2640.00 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
16820 1 mg $140.00 in stock
26820 5 mg $450.00 in stock
46820 25 mg $1460.00 in stock
56820 50 mg $1890.00 in stock
66820 100 mg $2640.00 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
2219-1g 1 g $450.00 in stock
2219-5g 5 g $980.00 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
2298-1g 1 g $490.00 in stock
2298-5g 5 g $980.00 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
2409-100mg 100 mg $250.00 in stock
2409-1g 1 g $790.00 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
3606-5mg 5 mg $110.00 in stock
3606-25mg 25 mg $290.00 in stock
3606-50mg 50 mg $435.00 in stock
3606-100mg 100 mg $595.00 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
3692-250mg 250 mg $325.00 in stock
3692-1g 1 g $539.00 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
53720 50 mg $110.00 in stock
63720 100 mg $210.00 in stock
73720 1 g $950.00 in stock
83720 5 g please inquire 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
17420 1 mg $125.00 in stock
27420 5 mg $260.00 in stock
47420 25 mg $510.00 in stock
57420 50 mg $895.00 in stock
67420 100 mg $1490.00 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
1H420 1 mg $125.00 in stock
2H420 5 mg $325.00 in stock
4H420 25 mg $510.00 in stock
5H420 50 mg $895.00 in stock
6H420 100 mg $1490.00 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
1G420 1 mg $125.00 in stock
2G420 5 mg $260.00 in stock
4G420 25 mg $510.00 in stock
5G420 50 mg $895.00 in stock
6G420 100 mg $1490.00 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
16420 1 mg $125.00 in stock
26420 5 mg $260.00 in stock
46420 25 mg $510.00 in stock
56420 50 mg $895.00 in stock
66420 100 mg $1490.00 in stock

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
15420 1 mg $125.00 in stock
25420 5 mg $260.00 in stock
45420 25 mg $510.00 in stock
55420 50 mg $895.00 in stock
65420 100 mg $1490.00 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
1E420 1 mg $125.00 in stock
2E420 5 mg $260.00 in stock
4E420 25 mg $510.00 in stock
5E420 50 mg $895.00 in stock
6E420 100 mg $1490.00 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
11420 1 mg $125.00 in stock
21420 5 mg $260.00 in stock
41420 25 mg $510.00 in stock
51420 50 mg $895.00 in stock
61420 100 mg $1490.00 5 days

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
14420 1 mg $125.00 in stock
24420 5 mg $260.00 in stock
44420 25 mg $510.00 in stock
54420 50 mg $895.00 in stock
64420 100 mg $1490.00 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
12420 1 mg $125.00 in stock
22420 5 mg $260.00 in stock
42420 25 mg $510.00 in stock
52420 50 mg $895.00 in stock
62420 100 mg $1490.00 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
1F420 1 mg $125.00 in stock
2F420 5 mg $260.00 in stock
4F420 25 mg $510.00 in stock
5F420 50 mg $895.00 in stock
6F420 100 mg $1490.00 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
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
1D420 1 mg $125.00 in stock
2D420 5 mg $325.00 in stock
4D420 25 mg $510.00 in stock
5D420 50 mg $895.00 in stock
6D420 100 mg $1490.00 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
2551-100mg 100 mg $117.00 in stock
2551-1g 1 g $450.00 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
2893-100mg 100 mg $145.00 in stock
2893-1g 1 g $590.00 in stock

Cyanine2 NHS ester minimal dye

Cyanine2 NHS ester minimal dye for protein labeling
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Cat. # Quantity Price Lead time
1A041 5 nmol $110.00 in stock
2A041 10 nmol $140.00 in stock
3A041 25 nmol $265.00 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
11020 1 mg $91.00 in stock
21020 5 mg $119.00 5 days
41020 25 mg $380.00 in stock
51020 50 mg $670.00 in stock
61020 100 mg $1150.00 in stock
81020 1 g please inquire 12 days

Cyanine3 NHS ester minimal dye

Cyanine3 minimal dye for protein labeling.
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Cat. # Quantity Price Lead time
1B041 5 nmol $110.00 in stock
2B041 10 nmol $175.00 in stock
3B041 25 nmol $265.00 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
12020 1 mg $125.00 in stock
22020 5 mg $260.00 in stock
42020 25 mg $510.00 in stock
52020 50 mg $895.00 in stock
62020 100 mg $1490.00 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
19320 1 mg $140.00 5 days
29320 5 mg $340.00 in stock
49320 25 mg $990.00 in stock
59320 50 mg $1690.00 in stock
69320 100 mg $3100.00 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
13020 1 mg $87.00 in stock
23020 5 mg $117.00 in stock
43020 25 mg $337.00 in stock
53020 50 mg $550.00 in stock
63020 100 mg $870.00 in stock
83020 1 g please inquire 12 days

Cyanine5 NHS ester minimal dye

Cy5 NHS ester minimal dye for protein labeling.
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Cat. # Quantity Price Lead time
1C041 5 nmol $110.00 in stock
2C041 10 nmol $175.00 in stock
3C041 25 nmol $265.00 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
17020 1 mg $125.00 in stock
27020 5 mg $260.00 in stock
47020 25 mg $510.00 in stock
57020 50 mg $895.00 in stock
67020 100 mg $1490.00 in stock

Cyanine7 NHS ester

Amine reactive NHS ester of near infrared dye Cyanine7.
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Cat. # Quantity Price Lead time
15020 1 mg $125.00 in stock
25020 5 mg $260.00 in stock
45020 25 mg $510.00 in stock
55020 50 mg $895.00 in stock
65020 100 mg $1490.00 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
16020 1 mg $125.00 in stock
26020 5 mg $260.00 in stock
46020 25 mg $510.00 in stock
56020 50 mg $895.00 in stock
66020 100 mg $1490.00 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.
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Cat. # Quantity Price Lead time
34720 10 mg $80.00 5 days
44720 25 mg $110.00 5 days
54720 50 mg $135.00 5 days
64720 100 mg $210.00 in stock
94720 1 g $1000.00 5 days
K4720 5 g $3570.00 5 days

DBCO-PEG6-NHS ester

A heterobifunctional linker with DBCO and NHS ester function groups flanking PEG6 (hexaethylene glycol).
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Cat. # Quantity Price Lead time
3664-50mg 50 mg $247.00 in stock
3664-100mg 100 mg $449.00 in stock
3664-1g 1 g $3490.00 5 days

Disuccinimidyl glutarate (DSG)

Homobifunctional crosslinker with two NHS ester groups at each end of a short 5-atom (7.7 angstrom) spacer.
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Cat. # Quantity Price Lead time
4018-100mg 100 mg $95.00 in stock
4018-1g 1 g $410.00 in stock

DOTA-NHS ester

Bifunctional linker with DOTA chelating and amine-reactive NHS ester groups for bioconjugation.
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Cat. # Quantity Price Lead time
4245-100mg 100 mg $125.00 in stock
4245-500mg 500 mg $525.00 in stock
4245-1g 1 g $990.00 21 days

DusQ 1 NHS ester

Functionalized DusQ 1 quencher derivative with quenching range from 480 - 580 nm for labeling of amine-containing molecules.
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Cat. # Quantity Price Lead time
41D20 25 mg $315.00 in stock
51D20 50 mg $580.00 in stock
61D20 100 mg $885.00 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.
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Cat. # Quantity Price Lead time
42D20 25 mg $315.00 in stock
52D20 50 mg $580.00 in stock
62D20 100 mg $885.00 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.
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Cat. # Quantity Price Lead time
48D20 25 mg $315.00 in stock
68D20 100 mg $885.00 in stock

DusQ 3 NHS ester

Amino-reactive NHS ester for the labeling with far-red quencher DusQ 3.
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Cat. # Quantity Price Lead time
43D20 25 mg $315.00 in stock
53D20 50 mg $580.00 in stock
63D20 100 mg $885.00 in stock

FAM NHS ester, 6-isomer

Activated N-hydroxysuccinimide ester of fluorescein (FAM), pure 6-isomer.
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Cat. # Quantity Price Lead time
25120 5 mg $110.00 in stock
45120 25 mg $145.00 in stock
55120 50 mg $260.00 in stock
65120 100 mg $470.00 in stock
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
2B220 5 mg $175.00 in stock

Hexynoic acid NHS ester

Hexynoic acid NHS ester for the labeling of biomolecules with alkyne group for copper-catalyzed click chemistry.
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Cat. # Quantity Price Lead time
41720 25 mg $95.00 in stock
51720 50 mg $180.00 in stock
61720 100 mg $290.00 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.
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Cat. # Quantity Price Lead time
11120 1 mg $110.00 in stock
21120 5 mg $210.00 in stock
41120 25 mg $410.00 in stock
51120 50 mg $695.00 in stock
61120 100 mg $1190.00 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.
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Cat. # Quantity Price Lead time
63520 100 mg $110.00 5 days

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.
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Cat. # Quantity Price Lead time
14220 1 mg $110.00 in stock
24220 5 mg $210.00 in stock
44220 25 mg $410.00 in stock
54220 50 mg $695.00 in stock
64220 100 mg $1190.00 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.
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Cat. # Quantity Price Lead time
11220 1 mg $110.00 in stock
21220 5 mg $210.00 in stock
41220 25 mg $410.00 in stock
51220 50 mg $695.00 in stock
61220 100 mg $1190.00 5 days

ROX NHS ester, 6-isomer

Pure 6-isomer of ROX (Rhodamine X, R101) NHS-ester for amine labeling.
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Cat. # Quantity Price Lead time
12220 1 mg $110.00 in stock
22220 5 mg $210.00 in stock
42220 25 mg $410.00 in stock
52220 50 mg $695.00 in stock
62220 100 mg $1190.00 in stock

sulfo-Cyanine3 NHS ester

Water soluble sulfo-Cyanine3 SE activated ester for amino-biomolecule labeling.
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Cat. # Quantity Price Lead time
11320 1 mg $91.00 in stock
21320 5 mg $119.00 in stock
41320 25 mg $395.00 in stock
51320 50 mg $729.00 in stock
61320 100 mg $1290.00 in stock

sulfo-Cyanine3.5 NHS ester

Amine reactive activated ester of water soluble, sulfonated sulfo-Cyanine3.5 dye.
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Cat. # Quantity Price Lead time
12320 1 mg $125.00 in stock
22320 5 mg $325.00 in stock
42320 25 mg $850.00 in stock
52320 50 mg $1490.00 in stock
62320 100 mg $1990.00 in stock

sulfo-Cyanine5 bis-NHS ester

Water soluble amine reactive Cyanine5 dye with two NHS ester groups.
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Cat. # Quantity Price Lead time
133D0 1 mg $125.00 5 days
233D0 5 mg $325.00 in stock
433D0 25 mg $850.00 in stock
533D0 50 mg $1490.00 in stock
633D0 100 mg $1990.00 in stock

sulfo-Cyanine5 NHS ester

Water-soluble sulfo-Cyanine5 succinimidyl ester for labeling various amine-containing molecules in the aqueous phase.
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Cat. # Quantity Price Lead time
13320 1 mg $91.00 in stock
23320 5 mg $119.00 in stock
43320 25 mg $345.00 in stock
53320 50 mg $557.00 in stock
63320 100 mg $890.00 in stock

sulfo-Cyanine5.5 NHS ester

Water soluble, sulfonated, far-red sulfo-Cyanine5.5 dye in the form of NHS ester.
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Cat. # Quantity Price Lead time
17320 1 mg $125.00 in stock
27320 5 mg $325.00 in stock
47320 25 mg $850.00 in stock
57320 50 mg $1490.00 in stock
67320 100 mg $1990.00 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.
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Cat. # Quantity Price Lead time
153D0 1 mg $125.00 in stock
253D0 5 mg $325.00 in stock
453D0 25 mg $850.00 in stock
553D0 50 mg $1490.00 in stock
653D0 100 mg $1990.00 in stock

sulfo-Cyanine7 NHS ester

sulfo-Cyanine7 NHS ester is a water-soluble, near-infrared, amine-reactive dye.
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Cat. # Quantity Price Lead time
15320 1 mg $125.00 in stock
25320 5 mg $325.00 in stock
45320 25 mg $850.00 in stock
55320 50 mg $1490.00 in stock
65320 100 mg $1990.00 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.
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Cat. # Quantity Price Lead time
16320 1 mg $125.00 in stock
26320 5 mg $325.00 in stock
46320 25 mg $850.00 in stock
56320 50 mg $1490.00 in stock
66320 100 mg $1990.00 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.
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Cat. # Quantity Price Lead time
27120 5 mg $210.00 in stock
47120 25 mg $350.00 in stock
57120 50 mg $595.00 in stock
67120 100 mg $790.00 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.
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Cat. # Quantity Price Lead time
18120 1 mg $110.00 in stock
28120 5 mg $210.00 in stock
48120 25 mg $350.00 in stock
58120 50 mg $595.00 in stock
68120 100 mg $790.00 in stock

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.
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Cat. # Quantity Price Lead time
3056-10mg 10 mg $145.00 in stock
3056-25mg 25 mg $225.00 in stock
3056-100mg 100 mg $550.00 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.
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Cat. # Quantity Price Lead time
2183-5mg 5 mg $60.00 in stock

TR X NHS ester, 5-isomer

TR (aka Texas Red) is a red-emitting fluorescent dye based on sulforhodamine scaffold, an amine-reactive NHS ester.
Show pricing
Cat. # Quantity Price Lead time
1V220 1 mg $125.00 in stock
2V220 5 mg $325.00 in stock
4V220 25 mg $510.00 in stock
5V220 50 mg $895.00 in stock
6V220 100 mg $1490.00 in stock

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