BDP 558/568 is a borondipyrromethene fluorophore with emission in the yellow part of the spectrum. Its absorption and emission spectra are in similar range as TAMRA, BDP TMR, Cyanine3, and sulfo-Cyanine3. This is an amine reactive NHS ester.
AxisPharm offers 4000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.