Wikipedia
Ditetrahydrofurylpropane
'''Ditetrahydrofurylpropane ''' is a colorless liquid boiling at 145-146 °C at 60 mm Hg. It may be prepared by hydrogenation of 2,2-di-2-furylpropane. Consideration of the structure of ditetrahydrofurylpropane, DTHFP suggests that this molecule may exist as various stereoisomers depending on the orientation of the two H atoms adjacent to the isopropylidene bridging unit. The meso form (absolute configuration SR or RS) is symmetrical, while the stereoisomers (of absolute configuration SS and RR) represent a racemic pair.