Why is isopropanol (cas 67 63 0 ) used in DNA extraction?
CAS 67-63-0 Isopropanol is used in DNA extraction to precipitate DNA out of solution, making it visible and collectable, because DNA is insoluble in it, especially in the presence of salts that neutralize its negative charge
Isopropanol is used in DNA extraction primarily as a precipitation agent. It reduces the solubility of nucleic acids (DNA or RNA) in an aqueous solution. When added to a solution containing DNA (usually after salt and buffer steps), isopropanol causes the long DNA molecules to aggregate and fall out of solution as a visible white pellet upon centrifugation. Compared to ethanol, isopropanol is often more effective at precipitating DNA at room temperature and requires smaller volumes (typically 0.6-0.7 volumes vs. 2 volumes for ethanol), but it can co-precipitate more salts, requiring careful washing.
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