1,3,5-Trimethyl-1,3,5-trivinylcyclotrisiloxane 1,3,5-Trivinyl-1,3,5-trimethylcyclotrisiloxane 2,4,6-Trimethyl-2,4,6-trivinylcyclotrisiloxane 3901-77-7 Cyclotrisiloxane, 2,4,6-triethenyl-2,4,6-trimethyl- Cyclotrisiloxane, 2,4,6-trimethyl-2,4,6-trivinyl- Methylvinylsiloxane cyclic trimer NSC242021