How is Ethanol-d (CAS: 925-93-9) typically synthesized?

Ethanol-d is typically synthesized by reacting ethanol with deuterium gas (D2) over a catalyst such as Pd/C. The reaction selectively deuterates the hydroxyl group, resulting in deuterium substitution. This method provides a high yield of Ethanol-d with good purity. The process is carried out under mild conditions, and the catalyst is removed by filtration before purification.