C4H9OH\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{OH}C4H9OH
(C2H5)2O\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{2} \mathrm{O}(C2H5)2O
C2H5OOCCH3\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OOCCH}_{3}C2H5OOCCH3
C3H7CHO\mathrm{C}_{3} \mathrm{H}_{7} \mathrm{CHO}C3H7CHO