Chemistry is traditionally divided into organic and inorganic chemistry. Computed Properties of C5H8O2, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1679-47-6
O-Alk-3-enyl- and O-alk-4-enyl-Se-phenylselenocarbonates undergo regio-specific exo cyclization to the corresponding gamma- and delta-lactones on treatment with tri-n-butylstannane and AIBN.
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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem