(organic chemistry, automotive) methyl tert-butyl ether

(chemistry, automotive) C₅H₁₂O ; an organic compound used to increase octane ratings of gasoline, through added oxygen

(organic chemistry) The peroxide of methyl ethyl ketone, 2,2'-peroxydi(butane-2-peroxol)

(organic chemistry) The IUPAC name for methacrylic acid.

(organic chemistry) The simplest aliphatic amine, CH₃NH₂, a toxic gas, having many industrial applications.

(organic chemistry) Synonym of toluene

(biochemistry) Any of several enzymes that catalyze methylation, especially of nucleic acids

plural of methylase

(biochemistry) Either of two isomeric methyl derivatives of adenine that cause damage to DNA

methamphetamine