5-Carboxy-X-rhodamineN-succinimidyl ester (ROX-SE) is used as an amine coupling reagent to form 5-carboxy-X-rhodamine (ROX) derivatized compounds such as proteins, nucleic acids and drugs that may be analyzed by fluorescence resonance energy transfer (FRET) and fluorescence quenching applications.Labeling reagent for preparation of charge-modified dye-labeled ddNTPs to "direct-load" DNA sequencing.
