2,4 Dithiapentane

2,4-Dithiapentane is an organosulfur compound known to be a component of truffle flavor. It is used as a primary aromatic additive in truffle oil. It is a colorless liquid with a strong odor.

2,4-Dithiapentane is the dimethyldithioacetal of formaldehyde. It is prepared by the acid-catalyzed addition of methyl mercaptan, the main aromatic compound in both halitosis and foot odor and a secondary compound in flatulence, to formaldehyde.