6 - ROX, SE 6 - Carboxy - X - rhodamine, succinimidyl ester; 6 - ROX, NHS ester
≥90% by HPLC
6-ROX, SE is the other purified single isomer of 5(6)-ROX, SE. It appears that 5-ROX is more often used than 6-ROX for labeling peptides and proteins. 6-ROX is predominately used for labeling nucleotides and sequencing nucleic acids.
Dominko T, et al. (2000). Dynamic imaging of the metaphase II spindle and maternal chromosomesin bovine oocytes: implications for enucleation efficiency verification, avoidance of parthenogenesis, and successful embryogenesis. Biol Reprod 62, 150-4; Parkhurst KM and Parkhurst LJ (1995). Donor-acceptor distance distributions in a double-labeled fluorescent oligonucleotide both as a single strand and in duplexes. Biochemistry 34, 293-300.