You know what it looks like… but what is it called?
TAKE THE QUIZ“isobutyl ketone”
We have one entry that includes the term isobutyl ketone.
methyl isobutyl ketone
noun: a pleasant-smelling flammable liquid compound CH3COCH2CH(CH3)2 made usually by catalytic hydrogenation of mesityl oxide and used chiefly as a solvent; 4-methyl-2-pentanone
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Merriam-Webster unabridged