AF488 is a fluorescent dye that is pH-insensitive over a wide pH range (from 4 to 10). It has an absorption maximum at 495 nm and an emission maximum at 519 nm in the green spectral region. The dye is hydrophilic and can be used to introduce fluorescent labels into a variety of molecules, including proteins and antibodies. Conjugates of AF488 molecules have high brightness and photostability and are commonly used in flow cytometry and microscopy. AF488 azide interacts with alkynyl derivatives of biomolecules in Click Chemistry reactions in the presence or absence of a copper(I) catalyst (with a terminal alkyne) or without a catalyst (with a cyclooctyne), resulting in the formation of Stable adduct.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.