[en] We present recent results on elastic and inelastic low/medium energy electron interaction with tetrahydrofuran, C₄H₈O, tetrahydrofurfuryl alcohol, C₅H₁₀O₂ and 3-hydroxytetrahydrofuran, C₄H₈O₂ molecules in gaseous phase. A comparative study of both absolute differential cross sections for elastic electron scattering and electron energy loss spectra, in a wide incident electron energy range from 50 to 300 eV, has been given. The measurements of the cross sections were performed both as a function of scattering angle and incident electron energy and normalized to the absolute scale according to relative flow measurements and reliable calculations. The experimental elastic DCSs are compared with the most recent theoretical results. Both for elastic and inelastic scattering a special attention has been paid to investigate potential differences in electron scattering processes upon substitution of one of the H-atom in tetrahydrofuran by the OH group (in 3-hydroxytetrahydrofuran) or CH₂OH group (in tetrahydrofurfuryl alcohol)