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With excitation maximum at 546 nm, watersoluble 5/6-Carboxytetramethylrhodamine-PEG4-Alkyne is an excellent mach to the intense 546 nm spectral line of the mercury-arc lamps used in most fluorescence microscopes. This probe is also efficiently excited by the 543 nm spectral line of the Ar – Kr mixed gas laser commonly used in many confocal laser-scanning microscopes.
The fluorescence of 5/6-Carboxytetramethylrhodamine-PEG4-Alkyne is pH insensitive between 4 and 9, and exhibits excellent photostability.
Solubility: DMSO, DMF, MeOH, Water