2-Pentanone, 4-methyl-4-phenyl- 4-Methyl-4-phenyl-2-pentanone 4-Methyl-4-phenylpentan-2-one 4-Phenyl-4-methylpentan-2-one 7403-42-1 AI3-24796 EINECS 231-007-9 Methyl 2-methyl-2-phenylpropyl ketone NSC 200696 NSC 54368