RB-PEG-SH (MW 5000)

RB-PEG-SH (MW 5000) (Rhodamine B-PEG-SH (MW 5000) ) is a fluorescent dye consisting of Rhodamine B, PEG, and a thiol group (SH) . The SH group is highly reactive and can form stable thioether bonds with various functional groups, such as maleimide, with excitation/emission wavelengths of 546/610 nm.