NHS Ester Dyes

Amine-reactive fluorescent dyes are widely used to modify amino acids, peptides, proteins (in particular, antibodies), oligonucleotides, nucleic acids, carbohydrates and other biological molecules.  NHS esters (ie, succinimidyl esters) are proven to be the best reagents for amine modifications because the amide bonds formed are as stable as the natural peptide bonds, and the resulting fluorescent biocojugates are generally more stable than  fluorescent conjugates using  FITC (fluorescein isothiocyanate).  NHS esters  react with primary amines in physiologic to slightly alkaline conditions (pH 7.2 to 9) to yield stable amide bonds, and releases N-hydroxysuccinimide (NHS). 

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5(6)-Carboxy-2',7'-dichlorofluorescein diacetate, SE

5(6)-Carboxy-2',7'-dichlorofluorescein diacetate, SE is an amine reactive fluorescent trac..

$99.00

5(6)-CR6G, SE

5(6)-CR6G, SE is the amine-reactive form of 5(6)-CR6G. Compared with tetramethylrhodamine (TAMRA, TM..

$129.00

5(6)-FAM, SE

5(6)-FAM, SE (full name: 5-(and-6)-Carboxyfluorescein, succinimidyl ester mixed isomers) is an amine..

$99.00

5(6)-ROX, SE

Mixed isomers of the succinimidyl ester of carboxy-X-rhodamine (ROX).  It is amine-reactive and..

$149.00

5(6)-TAMRA, SE

5(6) – TAMRA, SE is the amine-reactive, mixed isomer form of tetramethylrhodamine (TAMRA, or TMR).&n..

$99.00

5(6)-TAMRA-X, SE

The amine-reactive (5(6)-TAMRA-X, SE  can be used to create bright red-orange fluorescent bioco..

$99.00

5-FAM, SE

5-FAM, SE is the amine-reactive succinimidyl ester of single isomer 5-FAM acid.  It is widely u..

$99.00

5-ROX, SE

The isomeric 5-ROX, SE is an amine-reactive form of carboxy-X-rhodamine and is used as an amine coup..

$149.00

5-TAMRA, SE

5-TAMRA, SE is the single isomer of the amine reactive carboxytetramethylrhodamine (TAMRA) succinimi..

$99.00

5-TAMRA-X, SE

5-TAMRA-X, SE  is a single isomer of the amine-reactive (5(6)-TAMRA-X, SE.  TAMRA-X contai..

$99.00

6-FAM, SE

6-FAM SE is the amine-reactive succinimidyl ester of single isomer 6-FAM acid. It is one of the most..

$99.00

6-ROX, SE

6-ROX, SE is the other purified single isomer of 5(6)-ROX, SE.  The isomeric 6-ROX, SE is an am..

$149.00

6-TAMRA, SE

The isomeric 6-TAMRA, SE is an amine-reactive form of tetramethylrhodamine. The single-isomer prepar..

$99.00

6-TAMRA-X, SE

6-TAMRA-X, SE  is a single isomer of the amine-reactive (5(6)-TAMRA-X, SE.  TAMRA-X contai..

$99.00

Cy3 SE, trisulfo

Cy3 SE, trisulfo is a water soluble Cy3 succinimidyl ester, for the labeling of various amine-contai..

$249.00