1-Methyl-1-(4-methyl-2(or 3)-isopropylphenyl)ethyl 1-methyl-1-phenylethyl peroxide 68540-61-4 EINECS 271-307-7 Peroxide, 1-methyl-1-(4-methyl-2(or 3)-(1-methylethyl)phenyl)ethyl 1-methyl-1-phenylethyl