Product Description: Thiazole orange dimer YOYO 1 is a green fluorescent dye used for DNA staining. It belongs to the monomethine cyanine dye family and is a tetracationic homodimer of oxazole yellow (abbreviated as YO, hence the name YOYO), usually provided as a tetraiodide salt. In aqueous buffer, the free YOYO-1 dye (λmax 458 nm; λmax 564 nm) has a very low fluorescence quantum yield, but after binding to double-stranded DNA through diintercalation, the fluorescence intensity is increased by 3200 times (λmax 489 nm; λmax 509 nm).
Formula: C49H58I4N6O2
References: [1]Wang L, et al.Ultrafast Transient Absorption Spectra of Photoexcited YOYO-1 molecules call for additional investigations of their fluorescence quenching mechanism. J Photochem Photobiol A Chem. 2018 Dec 1;367:411-419.
CAS Number: 143413-85-8
Molecular Weight: 1270.64
Compound Purity: 97.00
Research Area: Others
Solubility: 10 mM in DMSO
Target: Fluorescent Dye
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