QSY-21
QSY-21 is a fluorescence quencher. QSY-21 possesses broad absorption in far red and NIR range, and can quench fluorescence of dyes that emit in this region. This is a carboxylic acid derivative. QSY-21 has intense absorption maximum at 661 nm, making it useful as an acceptor in fluorescence resonance energy transfer (FRET) applications. It is a common quencher for Cyanine5, Cyanine5.5, AF 647, or other spectrally similar fluorescent dyes.
Product Specifications
CAS Number
[1200894-41-2]
UNSPSC
12171500
Target
Fluorescent Dye
Related Pathways
Others
Field of Research
Others
Purity
98.77
Smiles
O=C(C1CCN(S(=O)(C2=C(C3=C4C=CC(N5C6=C(CC5)C=CC=C6)=CC4=[O+]C7=C3C=CC(N8C9=C(CC8)C=CC=C9)=C7)C=CC=C2)=O)CC1)O.[Cl-]
Molecular Formula
C41H36ClN3O5S
Molecular Weight
718.26
References & Citations
Shipping Conditions
Room Temperature
Storage Conditions
4°C (Powder, sealed storage, away from moisture and light)
Scientific Category
Dye Reagents
Clinical Information
No Development Reported
Available Sizes
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