QSY 21 NHS
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].
Product Specifications
CAS Number
304014-13-9
UNSPSC
12171500
Target
Fluorescent Dye
Type
Dye Reagents
Related Pathways
Others
Field of Research
Others
Assay Protocol
https://www.medchemexpress.com/qsy-21-nhs.html
Purity
95.0
Solubility
DMSO : 10 mg/mL (ultrasonic)
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)ON%10C(CCC%10=O)=O.[Cl-]
Molecular Formula
C45H39ClN4O7S
Molecular Weight
815.33
References & Citations
Shipping Conditions
Blue Ice
Storage Conditions
-20°C (Powder, sealed storage, away from moisture and light)
Scientific Category
Dye Reagents
Clinical Information
No Development Reported
Available Sizes
Frequently Asked Questions
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