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ViaVac™ Red/Green (FUN®1)

A fluorescent vitality dye for yeast, identical in structure to the dye FUN® 1. Living yeast cells show red fluorescent vacuolar tubules.

Product Attributes


485/530 nm (cytoplasm), 485/620 nm (vacoule)

Molecular weight


Storage Conditions

Store at -10 to -35 °C, Protect from light

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Note: Due to operating restrictions related to our COVID-19 response, primary antibody conjugates of R-PE, APC, PerCP, HRP, or AP are temporarily unavailable. All other antibody options are still available. We apologize for the inconvenience. Please see our easy-to-use Mix-n-Stain™ Antibody Labeling Kits for labeling antibodies with R-PE, APC, tandem dyes, and enzymes.
Catalog #
100 uL
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Product Description

ViaVac™ Red/Green (also known as FUN®1)  is a fluorescent vitality dye for yeast. It forms red fluorescent vacuolar tubules in metabolically active yeast cells.

  • Yeast vitality dye
  • Red fluorescent tubules only in live cells
  • Diffuse green fluorescence in all cells
  • 10 mM solution in DMSO
  • Store at -20°C, protected from light
  • C24H18ClIN2S

ViaVac™ dye passively enters cells, giving diffuse, green cytoplasmic staining of both lie and dead cells. In metabolically active yeast and fungus cells the dye is actively transported into the vacuole, resulting in red fluorescent staining of tubular intravacuolar structures. ViaVac™ dye is identical in structure to the dye FUN®1.

ViaVac Red/Green
ViaVac™ stains the vacuoles of metabolically active cells red and the cytoplasm of all cells green.
FUN 1 is a registered trademark of Thermo Fisher Scientific

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