What is the formula for ethanol?

Ethanol has the formula ' CH3-CH2-OH '.

Archaically it is known as 'ethyl alcohol'.

Casually by humans as just 'alcohol'

'Ethanol' is the modern IUPAC nomenclature name.

Here are two or three others to compare.

Methanol = methyl alcohol ( H-CH2-OH )

Propanol = propyl alcohol. (CH3-CH2-CH2-OH)

NB THe general formula for alcohols is ' R-CH2OH ' , Where 'R' is the rest of the organic molecule . DO NEITHER write it as R-CH3O' NOR 'R-COH3 ' The above is the IUPAC's Internationally preferred form.