.psi.-Cumene 1,2,4-Trimethylbenzene 1,2,5-Trimethylbenzene 1,3,4-Trimethylbenzene 95-63-6 Benzene, 1,2,4-trimethyl- NSC65600 Pseudocumene Pseudocumol WLN: 1R B1 D1 as-Trimethylbenzene