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t1   Reactive Quenchers (SQ Dyes) t1
 
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SQ Dyes

SQ Dyes are non-fluorescent quenchers for labeling of proteins, peptides and amino-modified oligonucleotids. These reactive quenchers are suitable as non-fluorescent acceptors in combination with a wide range of fluorescent donors in FRET based applications. Specific donor-acceptor pairs with these acceptors are listed under FRET applications. SQ 565, SQ 740 and SQ 780 are also are available as maleimides.

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Absorption spectrum of SQ-565 (K8-1902) in water Absorption spectrum of SQ-740 (K8-1649) in water
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Absorption spectrum of SQ-750 (K8-2602)  in water
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Absorption spectrum of SQ-780 (K8-1922)  in water
    Product
    Pack Size
    Product Code
    1 mg
    K8-1902-1mg
    1 mg
    K8-1649-1mg
    1 mg
    K8-2602-1mg
    SQ 780 1 mg K8-1922-1mg
 
 
Product Specifications:
Excitation Light Sources Quencher
Product Number Product NameTarget Group 380405 436488532594635670SolventλAb max. [nm]ε [M–1
cm–1]
             
K8-1649 SQ-740-NHSNH2 Water 740 44000
K8-1902 SQ-565-NHSNH2 Water 560 22000
K8-2602 SQ-755-di-NHSNH2 Water 756 200000
K8-1922 SQ-780-NHSNH2 MeOH 782 115000
 
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