5-ROX-PEO12 SE (full name: 5-Carboxy-X-rhodamine-PEO12-propionate, succinimidyl ester) has an approximately 47 Angstrom water-soluble PEG spacer that separates the red fluorescent ROX dye and the amine-reactive SE group.
- λEx/λ Em(MeOH) = 568/595 nm
- Dark red solid soluble in DMSO or DMF
- Store at -20 °C and protect from light
- MW: 1231.38