QSY 21 NHS, a dark quencher is an efficient energy transfer acceptor of the far red and NIR fluorescent probes. QSY 21 NHS works in the wavelength range of 540-750 nm, and is frequently used in FRET applications. QSY 21 NHS does not emit fluorescence in normal conditions. NHS esters can be used to label the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules[1].
Molecular Weight:
815.33
Purity:
95
CAS Number:
[304014-13-9]
Formula:
C45H39ClN4O7S
Target:
Fluorescent Dye
Application Notes:
MCE Product type: Dye Reagents
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