Carboxylic Acid Dyes

Carboxylic acids dyes are widely used to prepare fluorescent labeled peptides and small molecular fluorescent probes.  They are precursors of NHS esters (i.e., succinimidyl esters).  When some succinimidyl esters are not compatible with specific application, carboxylic acids are used to prepare sulfosuccininidyl esters or 4-sulfotetrafluoropehenyl (STP) esters which have higher water solubility than simple succinimdyl esters, thus to avoid using of organic solvent in the conjugation reaction.

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5(6)-carboxy-2',7'-dichlorofluorescein

5(6)-Carboxy-2',7'-dichlorofluorescein is a fluorescent intracellular pH indicator in the pH 4-5 ran..

$99.00

5(6)-CR6G

In general, rhodamine 6G conjugates have higher fluorescence quantum yields than tetramethylrhodamin..

$99.00

5(6)-FAM

Mixed isomer of 5 and 6-FAM.  Fluorescein is one of the most popular green fluorescent reagents..

$99.00

5(6)-ROX

ROX dyes are used to label peptides, proteins, and other biological ligands, and  widely used f..

$99.00

5(6)-TAMRA

5(6)-TAMRA is the mixture of two carboxy tetramethylrhodamine (TMR) isomers. It is used to modify am..

$99.00

5-(and-6)-carboxyl-2’,7’-dichlorofluorescein diacetate

5-(and-6)-carboxyl-2’,7’-dichlorofluorescein diacetate (Carboxy-DCFDA, CDCF) can passively diffuse i..

$99.00

5-FAM

5-FAM is the purified single isomer of carboxyfluorescein. . It is one of the most popular green flu..

$99.00

5-ROX

5-ROX is the purified single isomer of 5(6)-ROX. It is preferred for some complicated biological app..

$99.00

5-TAMRA

5-TAMRA is the purified single isomer of 5(6)-TAMRA. It is widely used to label peptides and protein..

$99.00

6-FAM

6-FAM is the other purified isomer of 5(6)-carboxyfluorescein. Complimentary to 5-FAM isomer, 6-FAM ..

$99.00

6-ROX

6-ROX is the other purified single isomer of 5(6)-ROX. It is preferred for some complicated biologic..

$109.00

6-TAMRA

6-TAMRA is the purified single isomer of 5(6)-TAMRA. 6-TAMRA has been a widely used fluorophore for ..

$99.00

Cy3 carboxylic acid

Free Cy3 carboxylic acid, non-activated dye. This is unsymmetrical bright cyanine dye including Cy3 ..

$199.00

Cy3 carboxylic acid, trisulfo

Cy3 carboxylic acid, trisulfo is a non-activated carboxylic acid. Contains Cy3 fluorophore. This dye..

$249.00

Cy5 carboxylic acid

This is unsymmetrical bright cyanine dye including Cy5 fluorophore.  Specifications ..

$199.00