2,4-Bis(trimethylsilyl)thymine 5-Methyl-2,4-bis(trimethylsiloxy)pyrimidine 55170-67-7 7288-28-0 Bis(O-trimethylsilyl)thymine NSC 154616 Pyrimidine, 5-methyl-2,4-bis((trimethylsilyl)oxy)- Pyrimidine, 5-methyl-2,4-bis(trimethylsiloxy)- (8CI)