Oxazole Yellow Homodimer (YOYO®-1), 1 mM in DMSO

Oxazole Yellow Homodimer, also known as YOYO®-1, is a green-fluorescent, cell-impermeant nucleic acid stain that can be used to stain dead or fixed cells.

Name SKU Size Availability Vendor Price Order
Oxazole Yellow Homodimer (YOYO®-1), 1 mM in DMSO 40090 100 uL (1 mM in DMSO) Generally 1-2 weeks from receipt of order Biotium Log in for pricing

Oxazole Yellow Homodimer, also known as YOYO®-1, is a green-fluorescent, cell-impermeant, high-affinity carbocyanine dimeric nucleic acid stain. The dye is essentially non-fluorescent in the absence of nucleic acids but exhibits strong excitation/emission maxima 491/508 nm when bound to nucleic acids. In addition, the dye is non-cytotoxic and may be used for long-term monitoring of viability in cell cultures.

  • Dimeric nucleic acid stain
  • Cell-impermeant
  • λEx/λEm (with DNA) = 491/508 nm
  • Supplied at 1 mM in DMSO
  • C49H58I4N6O2
  • MW: 1271

See the table below for other chemical equivalents of Thermo Fisher Scientific’s branded dead-cell selective nucleic acid dyes.

Biotium also offers unique NucSpot® Nuclear Stains for bright and specific nuclear staining in dead or fixed cells. The stains are available in a wide range of colours from green to near-IR. See our Cellular Stains Selection Guide and Cellular Stains Table for more information on other nuclear stains Biotium offers.

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