methylated

from WordNet (r) 3.0 (2006)

methylated
    adj 1: having received a methyl group; "methylated alcohol"

from The Collaborative International Dictionary of English v.0.48

Methylated \Meth"yl*a`ted\, a. (Chem.)
   Impregnated with, or containing, methyl alcohol or wood
   spirit; as, methylated spirits.
   [1913 Webster]