Structural formula and displayed formula for methanol:
CH₃-OH
Structural formula and displayed formula for ethanol:
CH₃-CH₂-OH (or simply C₂H₅OH)
Structural formula and displayed formula for propan-1-ol:
CH₃-CH₂-CH₂-OH
Structural formula and displayed formula for butan-1-ol:
CH₃-CH₂-CH₂-CH₂-OH