Propidium iodide (PI)



Product Description

Propidium iodide is a membrane-impermeant nucleic acid intercalator. The dye is commonly used to selectively stain dead cells in a cell population and also used as a counterstain in multicolor fluorescent imaging.

  • λExEm (DNA-bound) = 535/617 nm
  • λExEm (no DNA) = 493/636 nm
  • Orange red solid soluble in H2O or DMSO
  • Store at 4°C and protect from light, especially in solution
  • C27H34I2N4
  • MW: 668.4
  • [25535-16-4]
Compatible with the NucleoCounter® NC-3000™.


MSDS (PDF): MSDS 40016

100 mg

Shipment Method: Shipping and handling methods will be assessed and calculated at time of shipment based upon item(s) storage temperature conditions.

Expedited shipment may be requested at time of checkout.

Please note that products will be shipped at ambient temperature. This will not affect performance if the products are kept at the indicated temperature for long term storage. Please refer to the package insert for correct storage conditions.

More information about product handling and shelf life