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Catalog ID 6995 / 100 mg

    Other Unit Sizes:    6996 / 10 mL    7032 / 100 mg    7930 / 6 x 2.5 mL dropper bottles   

Propidium Iodide [PI] >98% *X-Pure*

Formula Weight CAS#
C27H34I2N4 668.40 25535-16-4
For 25+ Units, Contact us.

Propidium Iodide is a cell-impermeant, red-fluorescent dye that is commonly used for staining the nucleus of dead cells and as a counterstain for chromosomes. Because Propidium Iodide does not passively cross the cell membranes of most viable cells, it is commonly used as a red-fluorescent stain for dead cells in a culture. Propidium Iodide is an intercalating dye that binds to both DNA and RNA without significant preference for nucleic acid sequences and with a stoichiometry of about one dye for every 4–5 base pairs. The fluorescence of Propidium Iodide is greatly enhanced upon binding to nucleic acids and the DNA bound form is excited near 535 nm with a fluorescence emission near 617 nm. Nucleases may be used to distinguish DNA staining from RNA staining. We offer Propidium Iodide as standard purity (Product 7032) and high purity (Product 6995) solids as well as convenient, ready-to-use solutions in water (Products 6996, 7930). .

Product Size 100 mg
Form Red Solid
Absorption (estimated) Wavelength (λmax) 493 ± 4 nm (Buffer pH 7)
Storage conditions Refrigerate: Store at 4-8°C (Ref) Protect from moisture (D) Protect from light (L)
MDL# MFCD00011921

* Phenanthridinium, 3,8-diamino-5-[3-(diethylmethylammonio)propyl]-6-phenyl- , diiodide

Fluorescent Probes and Related Products:   Other Products
Label or Dye:   Propidium Iodide [PI]

Safety Data Sheet
SDS-PDF
Certificates of Analysis
Lot 50220 17-Nov-2014
Lot 50016 23-Jun-2014
Lot 50014 23-Jun-2014
Lot 50010 23-Jun-2014
Lot 50015 25-Mar-2014
Lot 50013 23-Jun-2013
Lot 50012 02-Apr-2013
Lot 50011 29-Jan-2013
Lot 50009 10-Jun-2012

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