QSY9 NHS | CAS 700834-40-8

Product Introduction

QSY9 NHS is a non-fluorescent quencher designed to efficiently dampen the fluorescence of nearby fluorophores through Förster resonance energy transfer (FRET) mechanisms. It contains an N-hydroxysuccinimide (NHS) ester reactive group, enabling covalent conjugation to primary amines on biomolecules such as proteins and peptides. QSY9 NHS is commonly incorporated into oligonucleotide labeling and biosensing assays, where it serves as a crucial component for modulating fluorescence signals in a controlled manner.