CH3−OH\mathrm{CH}_{3}-\mathrm{OH} CH3−OH
HCHO\mathrm{HCHO}HCHO
H−COOH\mathrm{H}-\mathrm{COOH}H−COOH
CH3−CH2−OH\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH}CH3−CH2−OH
