Single-Isomer Fluorescein Dyes

This group consists of high-purity fluorescent dyes produced by eliminating isomeric impurities of classical fluorescein dyes, resulting in a single, fully defined isomer.

• Advantages:
  •  Consistent absorption/emission spectra,
  •  more predictable behavior in chemical reactions,
  •  enhanced photostability, and low background signal.
• Chemical Properties: pH-sensitive fluorescence, high quantum yield, and suitability for functional group modification.
• Applications: High-sensitivity fluorescent assays, probe design, and biochemical analyses.