CnH2nCHO\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}} \mathrm{CHO}CnH2nCHO
CnH2n+1CHO\mathrm{C}_{n} \mathrm{H}_{2 n+1} \mathrm{CHO}CnH2n+1CHO
CnH2n−1CHO\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}-1} \mathrm{CHO}CnH2n−1CHO
CnHn+1CHO\mathrm{C}_{n} \mathrm{H}_{\mathrm{n}+1} \mathrm{CHO}CnHn+1CHO