Propidium Iodide

Propidium Iodide (PI) is membrane impermeant and generally excluded from viable cells. PI is commonly used for identifying dead cells in a population and as a counterstain in multicolor fluorescent techniques. PI is often used in conjunction with fluorescent probes such as Calcein-AM or FDA to identify living and dead cells. The excitation and emission wavelengths of the pi-dna complex were 535 nm and 615 nm respectively.

CAS: 25535-16-4
Mol. Formula: C27H34I2N4
Mol Weight: 668.39
Solubility: 1mg/mL in water