18604-02-9 2,2,4,4,6,8-HEXAMETHYL-6,8-DIPHENYLCYCLOTETRAS* Cyclotetrasiloxane, 2,4-diphenyl-2,4,6,6,8,8-hexamethyl-, racemic mixture racemic-2,4-Diphenyl-2,4,6,6,8,8-hexamethylcyclotetrasiloxane