MTSEA biotin-XX (MTSEA Biotincapcap; 2-((6-((6-((biotinoyl)amino)hexanoyl)amino)hexanoyl)amino)ethylmethanethiosulfonate) selectively labels thiols under mild conditions. The XX-linker should facilitate biotin-avidin interaction. Please also see TS biotin ethylenediamine (92010), TS biotin-X ethylenediamine (92011) and TS-biotin-XX ethylenediamine (92012), all of which allow selective labeling of cell surface thiols.Store desiccated at -20°CC25H45N5O6S3 MW: 607.7