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Propidium iodide (PI)
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 multicolour fluorescent imaging.
• Ex/ Em (DNA-bound) = 535/617 nm
• Ex/ Em (no DNA) = 493/636 nm
• Orange red solid soluble in H
2
O or DMSO
• Store at 4°C and protect from light, especially in solution
• C27H34I2N4
• MW: 668.4
• [25535-16-4]
Internal Reference:
GEN-Biot40016
Website URL:
/shop/gen-biot40016-propidium-iodide-pi-437178
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