C6H5COOH\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOH}C6H5COOH
C6H5CHO\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}C6H5CHO
C6H5CO\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CO}C6H5CO
C6H5OH\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}C6H5OH