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Oxazole Blue (PO-PRO™-1), 1 mM in DMSO

Oxazole Blue, also known as PO-PRO™-1, is a blue-fluorescent, cell-impermeant nucleic acid stain that can be used to stain dead or fixed cells.

Product Attributes

Apoptosis/viability marker

Dead cell stain

For live or fixed cells

For fixed cells, For live/intact cells

Detection method/readout

Fluorescence microscopy, Flow cytometry

Probe cellular localization

Nucleus

Assay type/options

No-wash staining, Real-time imaging

Cell permeability

Membrane impermeant

Colors

Blue

CAS number

157199-56-9

Excitation/Emission

434/457 nm (with DNA)

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Product Description

Oxazole Blue, also known as PO-PRO™-1, is a blue-fluorescent, cell-impermeant, high-affinity carbocyanine monomeric nucleic acid stain. The dye is essentially non-fluorescent in the absence of nucleic acids but exhibits strong excitation/emission maxima 434/457 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.

  • Monomeric nucleic acid stain
  • Cell-impermeant
  • Dead and apoptotic cell indicator
  • λExEm (with DNA) = 434/457 nm
  • Supplied at 1 mM in DMSO
  • C20H27I2N3O
  • MW: 579

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

Product

Equivalent to

Color (Ex/Em)

Catalog No.

Oxazole Blue, 1 mM in DMSOPO-PRO™-1Blue (434/457 nm) 40091
Oxazole Blue Homodimer, 1 mM in DMSOPOPO™-1Blue (433/457 nm) 40093
Oxazole Yellow, 1 mM in DMSOYO-PRO®-1Green (491/506 nm) 40089
Oxazole Yellow Homodimer, 1 mM in DMSOYOYO®-1Green (491/508 nm) 40090
TO Iodide, 1 mM in DMSOTO-PRO®-1Green (515/531 nm)40088
Thiazole Orange Homodimer, 1 mM in DMSOTOTO®-1Green (514/531 nm)40079
Oxazole Red, 1 mM in DMSOYO-PRO®-3Far-red (613/629 nm)40105
Oxazole Red Homodimer, 1 mM in DMSOYOYO®-3Far-red (612/631 nm)40106
Thiazole Red, 1 mM in DMSOTO-PRO®-3Far-red (642/657 nm)40087
Thiazole Red Homodimer, 1 mM in DMSOTOTO®-3Far-red (642/661 nm)40080
YOYO, YO-PRO, POPO, PO-PRO, TOTO, and TO-PRO are trademarks and registered trademarks of Thermo Fisher Scientific.
 

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