1-(4-Isopropylphenyl)-1-methylethyl hydroperoxide 30498-45-4 98-49-7 EINECS 202-673-8 HYDROPEROXIDE, 1-METHYL-1- 4-(1-METHYLETHYL)PHENYL ETHYL Hydroperoxide, 1-methyl-1-(4-(1-methylethyl)phenyl)ethyl Isopropylcumyl hydroperoxide,