The Collaborative International Dictionary of English v.0.48:

acetol \ac"e*tol\, n. [Acetic + -ol as in alcohol.] (Chem.)
   1. Methyl ketol; also, any of various homologues of the same.
      [Webster 1913 Suppl.]

   1. [cap.] a trade name used at different times to represent
      different substances, as hydroxyacetone, acetylsalicylic
      acid, acetal, diethyl aldehyde, or cellulose acetate.
      --MI11
      [PJC]