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Thiazole Red Homodimer, 1mM in DMSO

Thiazole red homodimer (TRhD), also know as TOTO®-3, is a cell-impermeant, high-affinity, far-red fluorogenic nucleic acid stain.

Product Attributes

Cellular localization

Nucleus & cytoplasm

Assay type/options

No-wash staining, Real-time imaging

Cell permeability

Membrane impermeant

Apoptosis/viability marker

Dead cell stain




642/660 nm (with DNA)

Catalog #
200 uL
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Product Description

Thiazole red homodimer (TRhD), also know as TOTO®-3, is a cell-impermeant, high-affinity nucleic acid stain based upon a symmetric cyanine dye dimer. The dye is essentially nonfluorescent in the absence of nucleic acids, but exhibits excitation/emission maxima ~642/660 nm when bound to nucleic acids. TRhD is also used as a nuclear counterstain and dead cell indicator.



TOTO is a registered trademark of Thermo Fisher Scientific.

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