# Question #92f22

Nov 15, 2016

$C {H}_{2} = C H O H$

The IUPAC name of the compound is ethenol

$\text{A chain of two carbon" ->"stem name} \implies e t h$

$\text{suffix of "C=C->"ene}$

$\text{suffix of "OH->"ol}$

So complete name

$\text{eth"+"ene"+"ol} \implies e t h e n o l$

'e' the last letter of 'ene' is a vowel which is followed by 'ol' that also begins with another vowel 'o'.So vowel 'e' at the end of suffix "ene" is dropped in the final name.