RB-PEG-SH (MW 600)

RB-PEG-SH (MW 4600) (Rhodamine B-PEG-SH (MW 600) ) is a fluorescent dye composed of Rhodamine B, PEG, and a thiol group (SH) . The SH group exhibits high reactivity, enabling it to form stable thioether bonds with various functional groups, such as maleimide (Ex/Em = 546/610 nm) .