CnH2n+2\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}+2}CnH2n+2
CnH2n+1−\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}+1} - CnH2n+1−
CnH˙2n\mathrm{C}_{n} \dot{H}_{2 n}CnH˙2n
CnH2n−2\mathrm{C}_{n} \mathrm{H}_{2 \mathrm{n}-2}CnH2n−2