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The 5-ATTO 488 modification incorporates an ATTO™ 488 dye (ATTO-TEC GmbH) at the 5' terminus of an oligonucleotide. ATTO 488 modifications boast excellent water solubility. With strong absorption and high fluorescence quantum yield, ATTO 488 can be used in a wide array of applications, including single molecule detection, high-resolution microscopy, and fluorescence in-situ hybridization (FISH). ATTO 488 is a xanthene dye and can be used as a substitute for Alexa Fluor® 488 and FAM; particularly where enhanced photostability is desired. ATTO 488 fluoresces in the green region of the visible spectrum and its fluorescence can be effectively quenched by BHQ®-1 dye.

Properties:

  • Formula:

    C31H36N4O13PS2

  • Molecular Weight:

    767.74

  • Absorption Maximum (Lambda Max):

    501

  • Extinction Coefficient at Lambda max:

    90000

  • Extinction Coefficient at 260 nm:

    22500

  • Fluorescence Maximum:

    523

Product usage:

  • The mass this product adds after conjugation and work-up (the additional mass seen by mass spectrometry) is:

    751.74

Storage and handling: