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Atto 495

ATTO 495 is an innovative fluorescent label based on the well-known Acridine Orange dye. It is characterized by strong absorption, a high fluorescence quantum yield, and excellent thermal and photostability. In solid matrices or at low temperatures, the dye exhibits intense and long-lasting phosphorescence. ATTO 495 is moderately hydrophilic, and its fluorescence is efficiently excited within the 465-510 nm wavelength range.

Atto 495 (Figure 1) can be used as an alternative of Alexa Fluor®488.


Figure 1. Structure of 5'-Atto 495 (R = sequence).


metabion offers the Atto 495 modification in its DNA and RNA portfolio (as a 5'-, 3'- or internal Atto 495-dT modification):

For more information, please visit our Portfolio. To place an order, click here.