2,2-dimethoxypropane

2,2-Dimethoxypropane (C₅H₁₂O₂), also called acetone dimethyl acetal, is a colorless, flammable liquid used in organic synthesis as an acetalating agent and mild dehydrating reagent. It converts to acetone and methanol upon hydrolysis (especially under acid catalysis), is commonly used to form or protect ketal/acetal groups and to remove water in condensation reactions. Handle with standard flammability precautions and work in a ventilated hood.