As an adjective desmethyl
is (organic chemistry|in combination) used to name organic compounds from which a methyl group has been removed.
As a noun normethadone is
a desmethyl derivative of methadone used as a cough suppressant.
desmethyl
English
Adjective
(-)
(organic chemistry, in combination) Used to name organic compounds from which a methyl group has been removed normethadone
English
Noun
(-)
A desmethyl derivative of methadone used as a cough suppressant.