1,3-Cyclohexadiene is a cyclic hydrocarbon with the chemical formula C6H8. It features a six-membered carbon ring with two double bonds located at the 1 and 3 positions. This structure makes it a member of the diene family, which are compounds containing two double bonds. The compound is colorless and has a sweet odor. It is used in organic synthesis and can serve as a precursor for various chemical reactions. Due to its unsaturated nature, 1,3-cyclohexadiene can undergo reactions typical of alkenes, such as hydrogenation and polymerization.