Methylation is the addition of a methyl group to a substrate or the substitution of an atom or group by a methyl group.
Similarly, acetylation is a process which introduces an acetyl functional group into achemical compound. (Deacetylation
is the removal of the acetyl group.).
A reaction involving the replacement of the hydrogen atom of an hydroxyl group with an acetyl radical (CH3CO) to yield a specific ester, the acetate. Acetic anhydride is commonly used as an acetylating agent reacting with free hydroxyl groups.
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