1-(3,4-Dihydroxyphenyl)-2-methyl-1-propanone 1-Propanone, 1-(3,4-dihydroxyphenyl)-2-methyl- (9CI) 3',4'-Dihydroxy-alpha-methylpropiophenone 3',4'-Dihydroxyisobutyrophenone 5466-89-7 BRN 2093432 ISOBUTYROPHENONE, 3',4'-DIHYDROXY- NSC 27389 Propiophenone, 3',4'-dihydroxy-2-methyl- (8CI) Propiophenone, 3',4'-dihydroxy-alpha-methyl- U 0521