RB-PEG-SH (MW 1000)

RB-PEG-SH (MW 1000) (Rhodamine B-PEG-SH (MW 1000) ) is a fluorescent dye composed of Rhodamine B, PEG, and a thiol group (SH) . The SH group is highly reactive and can form stable thioether bonds by reacting with various functional groups, such as maleimide (Ex/Em = 546/610 nm) .