DusQ 21 has a strong absorption maximum at 661 nm, and it has broad absorption in the far-infrared and NIR ranges, which can quench the fluorescence of dyes emitting in this region. It is a common quencher for Cyanine5, Cyanine5.5, AF 647, or other spectrally similar fluorochromes.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
![Acetic acid, [4-[2-(1H-pyrrol-2-yl)ethenyl]phenoxy]-, methyl ester, (E)- (9CI)](https://e1752fbe.rocketcdn.me/wp-content/uploads/2019/01/AP10642.gif)
