ATTO Rho3B NHS-ester Fluorescent Label 5 mg
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Product No. AD-RHO3B-35
ATTO Rho3B is a new fluorescent label related to the well-known dye Rhodamine B.
ATTO-TEC is a wholly owned subsidiary of Leica Microsystems
Optical properties
- λ abs = 566 nm
- ε max = 1.2×105 M -1 cm -1
- λ fl = 589 nm
- n fl = 50 %
- τ fl = 1.5 ns
- CF 260 = ε 260 /ε max = 0.27
- CF 280 = ε 280 / ε max = 0.13
ATTO Rho3B is a new fluorescent label related to the well-known dye Rhodamine B. The dye shows strong absorption and high thermal and photo-stability. The characteristic feature of the dye is its temperature depending fluorescence yield. The dye is moderately hydrophilic. ATTO Rho3B is a cationic dye.
After coupling to a substrate the dye carries a net electrical charge of +1. In solution its fluorescence can be excited efficiently in the range 545 - 575 nm.