SY-7 NHS ester

Catalog#

Unit Size

Price (USD)

Availability

Qty

Cat.#: 1700-5

Unit size: 5 mg

$115.00

in stock

Cat.#: 1700-25

Unit size: 25 mg

$325.00

in stock

Cat.#: 1700-100

Unit size: 100 mg

$895.00

in stock

SY-7 NHS Ester (QSY®-7 succinimidyl ester equivalent) is a nonfluorescent acceptor dye for preparation of peptide and oligonucleotide FRET probes. A broad and intense quenching range from 500-600 nm makes it useful as an acceptor in fluorescence resonance energy transfer (FRET) applications in conjunction with fluorescent dyes at 520 nm to 600 nm, such as Fluorescein, Oregon Green, Carboxyrhodamine 110 (Rhodamine Green), Alexa Fluor® 488, 532, 546, 555, 568, Cy3, TAMRA and ROX dyes.

The NHS ester (or succinimidyl ester) is the most popular amine reactive group for labeling with the primary amines of proteins (Lys), amine-modified oligonucleotides, and other amine-containing molecules. The labeling occurs most efficiently at pH 7-9 and forms a stable, covalent amide bond.

Specifications
Structure
Abs/Em Spectra
Protein Labeling Calculator
Documents

Reactivity

Primary amine

Abs maximum

560 nm

Extinction coefficient

90,000 cm-1M-1

Solubility

DMSO, DMF

Spectrally compatible dyes

Carboxyrhodamine 110 (Rhodamine Green), Alexa Fluor® 488, 532, 546, 555, 568, Cy3, TAMRA and ROX

Molecular weight

791.32

Storage conditions

-20C

Shipping conditions

Ambient temperature

Protein name

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MSDSs