Diethylpyrocarbonate (DEPC) (CAS No. 1609-47-8) is a moisture sensitive product that will readily decompose to ethanol and carbon dioxide in aqueous solution. DEPC can inhibit ryanodine binding to the ryanodine/Ca2 + receptor channel in a dose-and time-dependent manner, or work as a nuclease inhibitor. DEPC is often used to treat water used in the handling of RNA to remove RNases and reduce the risk of the RNA being degraded. The product is imported as a clear, colorless liquid.
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[1]. https://rulings.cbp.gov/ruling/N305133