Carboxylic acids in Reactive groups

AF 343 (Coumarin)-X-carboxylic acid

AF 343 (Coumarin) carboxylic acid. Extended aminohexanoyl linker increases solubility and provides spatial separation between the fluorophore, and the functional group.
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Cat. # Quantity Price Lead time
12690 1 mg 105$ in stock
22690 5 mg 165$ in stock
42690 25 mg 285$ in stock
52690 50 mg 495$ in stock
62690 100 mg 880$ in stock
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AF 430 carboxylic acid

Non-reactive form of AF 430 fluorescent dye to be used as a reference standard.
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Cat. # Quantity Price Lead time
10890 1 mg 110$ in stock
20890 5 mg 165$ in stock
40890 25 mg 380$ in stock
50890 50 mg 695$ in stock
60890 100 mg 1190$ in stock
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AF 488 carboxylic acid

AF 488 carboxyl derivative can be used as a reference standard or for synthesizing various AF488 esters.
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Cat. # Quantity Price Lead time
11890 1 mg 125$ in stock
21890 5 mg 325$ in stock
41890 25 mg 950$ in stock
51890 50 mg 1625$ in stock
61890 100 mg 2090$ in stock
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AF 532 carboxylic acid

Non-reactive form of AF 532 fluorescent dye with a free carboxyl group.
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Cat. # Quantity Price Lead time
1C890 1 mg 110$ in stock
2C890 5 mg 165$ in stock
4C890 25 mg 380$ in stock
5C890 50 mg 695$ in stock
6C890 100 mg 1190$ in stock
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AF 555 carboxylic acid

Non-reactive form of AF 555 fluorescent dye with a free carboxyl group.
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Cat. # Quantity Price Lead time
1K890 1 mg 125$ in stock
2K890 5 mg 325$ in stock
4K890 25 mg 950$ in stock
5K890 50 mg 1625$ in stock
6K890 100 mg 2090$ in stock
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AF 568 carboxylic acid

Non-reactive form of AF 568 fluorescent dye with a free carboxyl group.
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Cat. # Quantity Price Lead time
15890 1 mg 125$ in stock
25890 5 mg 325$ in stock
45890 25 mg 950$ in stock
55890 50 mg 1625$ in stock
65890 100 mg 2090$ in stock
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AF 594 carboxylic acid

Non-reactive form of AF 594 fluorescent dye with a free carboxyl group.
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Cat. # Quantity Price Lead time
14890 1 mg 125$ in stock
24890 5 mg 325$ in stock
44890 25 mg 950$ in stock
54890 50 mg 1625$ in stock
64890 100 mg 2090$ in stock
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AF 647 carboxylic acid

AF 647 carboxylic acid is a water-soluble dye that can be used as a reference standard for dye conjugates and the synthesis of AF647-containing biomolecules.
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Cat. # Quantity Price Lead time
16890 1 mg 140$ in stock
26890 5 mg 420$ in stock
46890 25 mg 1365$ in stock
56890 50 mg 1790$ in stock
66890 100 mg 2640$ in stock
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Alkyne-PEG2-carboxylic acid

Bifunctional diethyleneglycol linker with terminal alkyne and carboxylic acid moieties.
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Cat. # Quantity Price Lead time
2155-1g 1 g 380$ in stock
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Alkyne-PEG3-carboxylic acid

Bifunctional triethyleneglycol linker with terminal alkyne and carboxylic acid moieties.
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Cat. # Quantity Price Lead time
1743-1g 1 g 490$ in stock
1743-5g 5 g 980$ in stock
1743-25g 25 g please inquire 5 days
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Alkyne-PEG4-carboxylic acid

Bifunctional tetraethyleneglycol linker with terminal alkyne and carboxylic acid moieties.
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Cat. # Quantity Price Lead time
2187-1g 1 g 380$ in stock
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AMCA carboxylic acid

Non-reactive form of AMCA fluorescent dye with a free carboxyl group. 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
3357-25mg 25 mg 45$ in stock
3357-100mg 100 mg 95$ in stock
3357-1g 1 g 490$ in stock
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Amine-PEG2-carboxylic acid

Hydrophilic PEG2-linker with a terminal amino group and a carboxyl group.
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Cat. # Quantity Price Lead time
2817-250mg 250 mg 90$ in stock
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Amine-PEG3-carboxylic acid

Hydrophilic PEG3-linker with a terminal amino group and a carboxyl group.
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Cat. # Quantity Price Lead time
2616-250mg 250 mg 90$ in stock
2616-1g 1 g 230$ in stock
2616-2g 2 g 390$ in stock
2616-5g 5 g 690$ in stock
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Amine-PEG3-carboxylic acid, hydrochloride

Hydrophilic linker with amino and carboxyl groups, containing PEG spacer.
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Cat. # Quantity Price Lead time
NO items of this product available in stock but you can submit request for bulk.
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ATT 550 carboxylic acid

Derivative of АТТ 550 fluorophore with non-activated free carboxylic acid group.
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Cat. # Quantity Price Lead time
1C990 1 mg 125$ in stock
2C990 5 mg 325$ in stock
4C990 25 mg 850$ in stock
5C990 50 mg 1490$ in stock
6C990 100 mg 1990$ in stock
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Azide-PEG2-carboxylic acid

Bifunctional diethylene glycol with terminal carboxyl and azido groups.
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Cat. # Quantity Price Lead time
2816-250mg 250 mg 230$ in stock
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Azide-PEG3-carboxylic acid

Bifunctional triethylene glycol with terminal carboxyl and azido groups.
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Cat. # Quantity Price Lead time
2558-1g 1 g 265$ in stock
2558-5g 5 g 950$ in stock
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Azide-PEG4-carboxylic acid

Bifunctional tetraethylene glycol with terminal carboxyl and azido groups.
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Cat. # Quantity Price Lead time
2723-250mg 250 mg 129$ 21 days
2723-1g 1 g 289$ 21 days
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BDP 558/568 carboxylic acid

BDP 558/568 is a borondipyrromethene dye with yellow emission. The dye as a carboxylic acid can be used in peptide synthesis (after appropriate activation of the carboxylic group).
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Cat. # Quantity Price Lead time
17490 1 mg 125$ in stock
27490 5 mg 260$ in stock
47490 25 mg 510$ in stock
57490 50 mg 895$ in stock
67490 100 mg 1490$ in stock
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BDP 564/570 carboxylic acid

A derivative of BDP 564/570 fluorophore with a free carboxylic acid functional group. The dye has an emission in the orange part of the spectrum.
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Cat. # Quantity Price Lead time
1H490 1 mg 110$ in stock
2H490 5 mg 260$ in stock
4H490 25 mg 510$ in stock
5H490 50 mg 895$ in stock
6H490 100 mg 1490$ in stock
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BDP 576/589 carboxylic acid

Derivative of BDP 576/589 fluorophore with non-activated free carboxylic acid group.
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Cat. # Quantity Price Lead time
1G490 1 mg 125$ in stock
2G490 5 mg 260$ in stock
4G490 25 mg 510$ in stock
5G490 50 mg 895$ in stock
6G490 100 mg 1490$ in stock
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BDP 581/591 carboxylic acid

BDP 581/591 is a multi purpose fluorophore, that can also be used to probe reactive oxygen species (ROS). This is a carboxylic acid derivative with a free COOH group.
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Cat. # Quantity Price Lead time
16490 1 mg 125$ in stock
26490 5 mg 260$ in stock
46490 25 mg 510$ in stock
56490 50 mg 895$ in stock
66490 100 mg 1490$ in stock
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BDP 630/650 carboxylic acid

BDP 630/650 is a bright fluorophore for far red part of the spectrum. This dye is perfect for microscopy and fluorescence polarization assays. This is a carboxylic acid that can be activated for the coupling, or used as a control.
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Cat. # Quantity Price Lead time
15490 1 mg 125$ in stock
25490 5 mg 260$ in stock
45490 25 mg 510$ in stock
55490 50 mg 895$ in stock
65490 100 mg 1490$ in stock
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BDP FL carboxylic acid

Borondipyrromethene dye for fluorescein (FAM) channel, free unactivated carboxylic acid useful as a negative control, and for the calibration.
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Cat. # Quantity Price Lead time
11490 1 mg 125$ in stock
21490 5 mg 260$ in stock
41490 25 mg 510$ in stock
51490 50 mg 895$ in stock
61490 100 mg 1490$ in stock
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BDP R6G carboxylic acid

Free carboxylic acid derivative of BDP R6G - a borondipyrromethene dye with absorption and emission spectra resembling R6G rhodamine.
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Cat. # Quantity Price Lead time
14490 1 mg 125$ in stock
24490 5 mg 260$ in stock
44490 25 mg 510$ in stock
54490 50 mg 895$ in stock
64490 100 mg 1490$ in stock
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BDP TMR carboxylic acid

Borondipyrromethene dye for TMR channel with a non-activated carboxylic acid group.
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Cat. # Quantity Price Lead time
12490 1 mg 125$ in stock
22490 5 mg 260$ in stock
42490 25 mg 510$ in stock
52490 50 mg 895$ in stock
62490 100 mg 1490$ in stock
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BDP TR carboxylic acid

BDP TR is a borondipyrromethene dye for ROX channel. This is a carboxy derivative bearing free COOH group for the conjugation with alcohols by Steglich esterification, or for the use in non-conjugated form.
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Cat. # Quantity Price Lead time
13490 1 mg 125$ in stock
23490 5 mg 260$ in stock
43490 25 mg 510$ in stock
53490 50 mg 895$ in stock
63490 100 mg 1490$ in stock
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Biotin-PEG4-carboxylic acid

Bifunctional tetraethyleneglycol linker with biotin and carboxylic acid moieties.
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Cat. # Quantity Price Lead time
2925-100mg 100 mg 110$ in stock
2925-1g 1 g 550$ in stock
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Calibro® Fluor 610 carboxylic acid

Carboxyl derivative of Calibro® Fluor 610, a red-emitting fluorescent dye specifically designed for qPCR applications. It can be used as a reference standard or for synthesizing various Calibro® Fluor 610 esters.
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Cat. # Quantity Price Lead time
24C90 5 mg 139$ in stock
44C90 25 mg 649$ in stock
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Cyanine3 carboxylic acid

The free carboxylic acid of Cyanine3 dye. Non-sulfonated dye, with good solubility in organic solvents, and limited aqueous solubility.
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Cat. # Quantity Price Lead time
11090 1 mg 110$ in stock
21090 5 mg 210$ in stock
41090 25 mg 410$ in stock
51090 50 mg 695$ in stock
61090 100 mg 1190$ in stock
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Cyanine3.5 carboxylic acid

Unactivated monofunctional Cy3.5 carboxylic acid.
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Cat. # Quantity Price Lead time
12090 1 mg 110$ in stock
22090 5 mg 210$ in stock
42090 25 mg 410$ in stock
52090 50 mg 695$ in stock
62090 100 mg 1190$ in stock
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Cyanine3B carboxylic acid

A Cyanine3B derivative with unactivated free carboxy group for use as a control, calibration, and conjugation after pre-activation.
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Cat. # Quantity Price Lead time
2321-1mg 1 mg 125$ in stock
2321-5mg 5 mg 325$ in stock
2321-25mg 25 mg 850$ in stock
2321-50mg 50 mg 1490$ in stock
2321-100mg 100 mg 2450$ in stock
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Cyanine5 carboxylic acid

Cyanine5 carboxylic acid, unactivated dye. An analog of Cy5®; free carboxylic acid.
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Cat. # Quantity Price Lead time
13090 1 mg 110$ in stock
23090 5 mg 210$ in stock
43090 25 mg 410$ in stock
53090 50 mg 695$ in stock
63090 100 mg 1190$ in stock
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Cyanine5.5 carboxylic acid

Cyanine5.5 dye, free acid form, unactivated. The dye can be considered non-reactive for most applications.
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Cat. # Quantity Price Lead time
17090 1 mg 125$ in stock
27090 5 mg 260$ in stock
47090 25 mg 510$ in stock
57090 50 mg 895$ in stock
67090 100 mg 1490$ in stock
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Cyanine7 carboxylic acid

The unactivated free carboxylic acid of near-infrared fluorescent dye Cyanine7.
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Cat. # Quantity Price Lead time
15090 1 mg 125$ in stock
25090 5 mg 260$ in stock
45090 25 mg 510$ in stock
55090 50 mg 895$ in stock
65090 100 mg 1490$ in stock
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Cyanine7 dicarboxylic acid

Cyanine7 dicarboxylic acid is a bifunctional dye molecule possessing two carboxylic acid groups.
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Cat. # Quantity Price Lead time
1512-1mg 1 mg 125$ in stock
1512-5mg 5 mg 260$ in stock
1512-25mg 25 mg 510$ in stock
1512-50mg 50 mg 895$ in stock
1512-100mg 100 mg 1490$ in stock
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Cyanine7.5 carboxylic acid

Cyanine7.5 carboxylic acid - unactivated NIR cyanine dye carboxylic acid.
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Cat. # Quantity Price Lead time
16090 1 mg 125$ in stock
26090 5 mg 260$ in stock
46090 25 mg 510$ in stock
56090 50 mg 895$ in stock
66090 100 mg 1490$ in stock
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DusQ 21 carboxylic acid

DusQ 21 is a non-fluorescent quencher molecule for far red and NIR range
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Cat. # Quantity Price Lead time
48D90 25 mg 290$ in stock
68D90 100 mg 885$ in stock
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Iodo-PEG3-carboxylic acid

A bifunctional compound containing carboxylic acid functional group, and iodide, an active halogen group.
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Cat. # Quantity Price Lead time
2063-1g 1 g 190$ in stock
2063-5g 5 g 795$ in stock
2063-10g 10 g please inquire in stock
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PEG3-dicarboxylic acid

PEG3-dicarboxylic acid is a bifunctional linker carrying two carboxy groups. It contains a polyethyleneglycol-3 linker between the carboxyls.
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Cat. # Quantity Price Lead time
1715-1g 1 g 490$ in stock
1715-5g 5 g 890$ in stock
1715-10g 10 g 1370$ in stock
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Pyrenebutyric acid

A derivative of pyrene containing a free carboxylic acid function. Pyrene is a polycyclic aromatic hydrocarbon (PAH) which exhibits excimer fluorescence and affinity to graphite.
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Cat. # Quantity Price Lead time
63590 100 mg 110$ in stock
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ROX carboxylic acid, 6-isomer

Derivative of ROX (Rhodamine X, Rhodamine 101) fluorophore with non-activated free carboxylic acid group. This reagent is a pure 6-isomer.
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Cat. # Quantity Price Lead time
22290 5 mg 109$ in stock
42290 25 mg 315$ in stock
62290 100 mg 499$ in stock
82290 1 g 1840$ in stock
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sulfo-Cyanine3 carboxylic acid

sulfo-Cyanine3 free unactivated monofunctional carboxylic acid, water-soluble dye.
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Cat. # Quantity Price Lead time
11390 1 mg 110$ in stock
21390 5 mg 190$ in stock
41390 25 mg 390$ in stock
51390 50 mg 695$ in stock
61390 100 mg 1190$ in stock
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sulfo-Cyanine3.5 carboxylic acid

Derivative of water-soluble sulfo-Cyanine3.5 dye containing a non-activated free carboxylic acid group.
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Cat. # Quantity Price Lead time
12390 1 mg 110$ in stock
22390 5 mg 210$ in stock
42390 25 mg 410$ in stock
52390 50 mg 695$ in stock
62390 100 mg 1190$ in stock
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sulfo-Cyanine5 carboxylic acid

Water-soluble Cyanine5 carboxylic acid, non-activated fluorescent dye.
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Cat. # Quantity Price Lead time
13390 1 mg 115$ in stock
23390 5 mg 240$ in stock
43390 25 mg 510$ in stock
53390 50 mg 895$ in stock
63390 100 mg 1390$ in stock
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sulfo-Cyanine5.5 carboxylic acid

Water-soluble far-red fluorescent dye sulfo-Cyanine5.5 in the form of free non-activated carboxylic acid. The dye is useful for calibration and as a non-reactive control.
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Cat. # Quantity Price Lead time
17390 1 mg 125$ in stock
27390 5 mg 325$ in stock
47390 25 mg 850$ in stock
57390 50 mg 1490$ in stock
67390 100 mg 1990$ in stock
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sulfo-Cyanine7 carboxylic acid

sulfo-Cyanine7 carboxylic acid is a non-reactive fluorescent dye that can be used as a NIR (near-infrared) marker.
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Cat. # Quantity Price Lead time
15390 1 mg 125$ in stock
25390 5 mg 325$ in stock
45390 25 mg 850$ in stock
55390 50 mg 1490$ in stock
65390 100 mg 1990$ in stock
Found better price? Let us know and we will propose the way forward!

sulfo-Cyanine7 dicarboxylic acid

sulfo-Cyanine7 dicarboxylic acid is a bifunctional dye with two carboxyl groups.
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Cat. # Quantity Price Lead time
1497-1mg 1 mg 125$ in stock
1497-5mg 5 mg 325$ in stock
1497-25mg 25 mg 850$ in stock
1497-50mg 50 mg 1490$ in stock
1497-100mg 100 mg 1990$ in stock
Found better price? Let us know and we will propose the way forward!

sulfo-Cyanine7.5 carboxylic acid

Water-soluble, near-infrared fluorescent dye in the form of carboxylic acid. The dye has high hydrophilicity due to the presence of four sulfo groups.
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Cat. # Quantity Price Lead time
16390 1 mg 125$ in stock
26390 5 mg 325$ in stock
46390 25 mg 850$ in stock
56390 50 mg 1490$ in stock
66390 100 mg 1990$ in stock
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sulfo-Cyanine7.5 dicarboxylic acid

sulfo-Cyanine7.5 dicarboxylic acid is a bifunctional cyanine dye with two carboxylic acid (COOH) groups. The molecule can be used to construct cross conjugates containing a near-infrared emitting fluorophore.
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Cat. # Quantity Price Lead time
1382-1mg 1 mg 125$ in stock
1382-5mg 5 mg 325$ in stock
1382-25mg 25 mg 850$ in stock
1382-50mg 50 mg 1490$ in stock
1382-100mg 100 mg 1990$ in stock
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TAMRA carboxylic acid, 5-isomer

Non-reactive form of TAMRA fluorescent dye with a free carboxyl group. Pure 5-isomer.
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Cat. # Quantity Price Lead time
27190 5 mg 110$ in stock
47190 25 mg 125$ in stock
57190 50 mg 185$ in stock
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Tetraglycine hydrochloride

Tetraglycine is an oligopeptide composed of four glycine monomers. It is used as a bifunctional linker with amino and carboxyl groups.
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Cat. # Quantity Price Lead time
3049-500mg 500 mg 319$ in stock
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Thalidomide-carboxylic acid

Thalidomide-containing building block with carboxylic acid functionality for convenient PROTAC molecule assembly by attachment amino-functionalized linkers and ligands to thalidomide via 4-O-position.
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Cat. # Quantity Price Lead time
4169-100mg 100 mg 160$ in stock
4169-500mg 500 mg 510$ in stock
4169-1g 1 g 740$ in stock
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Thalidomide-O-PEG2-carboxylic acid

Thalidomide-containing building block with PEG2-linker and carboxylic group for conjugation with amino-functionalized linkers and target protein ligands.
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Cat. # Quantity Price Lead time
4192-25mg 25 mg 139$ in stock
4192-100mg 100 mg 419$ in stock
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TR-X-carboxylic acid, 5-isomer

Carboxyl derivative of TR, a red-emitting fluorescent dye. It can be used as a reference standard or for synthesizing various TR esters. The extended aminohexanoyl linker increases solubility and provides spatial separation between the fluorophore and the functional group.
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Cat. # Quantity Price Lead time
1V290 1 mg 98$ in stock
3V290 10 mg 199$ in stock
6V290 100 mg 1250$ in stock
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