(1-methylethenyl)benzene 1-methyl-1-phenylethylene 1-phenyl-1-methylethylene 2-Phenyl-1-propene 2-Phenylpropene 2-phenyl-2-propene 2-phenylpropylene AMS InChI=1/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H Isopropenylbenzene Ortho Brush Killer A alpha-methylstyrene alpha-methylstyrol as-methylphenylethylene benzene, (1-methylethenyl)- beta-phenylpropene beta-phenylpropylene