1,1,3,3-Tetramethoxypropane 102-52-3 AI3-28938 EINECS 203-037-2 Malonaldehyde bis(dimethyl acetal) Malonaldehyde tetramethyl acetal Malonaldehyde, bis(dimethyl acetal) (8CI) NSC 27794 Propane, 1,1,3,3-tetramethoxy- Tetramethoxypropane